30979236 has 48 divisors (see below), whose sum is σ = 77051520. Its totient is φ = 9653760.

The previous prime is 30979213. The next prime is 30979241. The reversal of 30979236 is 63297903.

It is a junction number, because it is equal to n+sod(n) for n = 30979194 and 30979203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36505 + ... + 37343.

It is an arithmetic number, because the mean of its divisors is an integer number (1605240).

Almost surely, 2^30979236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30979236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38525760).

30979236 is an abundant number, since it is smaller than the sum of its proper divisors (46072284).

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

30979236 is a wasteful number, since it uses less digits than its factorization.

30979236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 30979236 is about 5565.8993882391. The cubic root of 30979236 is about 314.0679123396.

The spelling of 30979236 in words is "thirty million, nine hundred seventy-nine thousand, two hundred thirty-six".