21376038 has 16 divisors (see below), whose sum is σ = 45267120. Its totient is φ = 6706176.

The previous prime is 21376037. The next prime is 21376049. The reversal of 21376038 is 83067312.

It is a junction number, because it is equal to n+sod(n) for n = 21375996 and 21376014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104683 + ... + 104886.

It is an arithmetic number, because the mean of its divisors is an integer number (2829195).

Almost surely, 2^21376038 is an apocalyptic number.

21376038 is an abundant number, since it is smaller than the sum of its proper divisors (23891082).

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

21376038 is a wasteful number, since it uses less digits than its factorization.

21376038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209591.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 21376038 is about 4623.4227580873. The cubic root of 21376038 is about 277.5294474066.

The spelling of 21376038 in words is "twenty-one million, three hundred seventy-six thousand, thirty-eight".