38019540 has 96 divisors (see below), whose sum is σ = 116282880. Its totient is φ = 9225216.

The previous prime is 38019533. The next prime is 38019557. The reversal of 38019540 is 4591083.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 38019498 and 38019507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61312 + ... + 61928.

It is an arithmetic number, because the mean of its divisors is an integer number (1211280).

Almost surely, 2^38019540 is an apocalyptic number.

38019540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38019540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58141440).

38019540 is an abundant number, since it is smaller than the sum of its proper divisors (78263340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38019540 is a wasteful number, since it uses less digits than its factorization.

38019540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 38019540 is about 6165.9987025623. The cubic root of 38019540 is about 336.2551562436.

The spelling of 38019540 in words is "thirty-eight million, nineteen thousand, five hundred forty".