30985734 has 16 divisors (see below), whose sum is σ = 66738672. Its totient is φ = 9534048.

The previous prime is 30985729. The next prime is 30985753. The reversal of 30985734 is 43758903.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 30985692 and 30985701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198549 + ... + 198704.

It is an arithmetic number, because the mean of its divisors is an integer number (4171167).

Almost surely, 2^30985734 is an apocalyptic number.

30985734 is an abundant number, since it is smaller than the sum of its proper divisors (35752938).

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

30985734 is a wasteful number, since it uses less digits than its factorization.

30985734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397271.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 30985734 is about 5566.4830907854. The cubic root of 30985734 is about 314.0898697417.

The spelling of 30985734 in words is "thirty million, nine hundred eighty-five thousand, seven hundred thirty-four".