30349956 has 48 divisors (see below), whose sum is σ = 87161984. Its totient is φ = 8004096.

The previous prime is 30349951. The next prime is 30349993. The reversal of 30349956 is 65994303.

It is a super-2 number, since 2×30349956² = 1842239658403872, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (30349951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12805 + ... + 14988.

Almost surely, 2^30349956 is an apocalyptic number.

It is an amenable number.

30349956 is an abundant number, since it is smaller than the sum of its proper divisors (56812028).

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

30349956 is a wasteful number, since it uses less digits than its factorization.

30349956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27820 (or 27818 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 30349956 is about 5509.0794149295. The cubic root of 30349956 is about 311.9267990664.

The spelling of 30349956 in words is "thirty million, three hundred forty-nine thousand, nine hundred fifty-six".