30351996 has 60 divisors (see below), whose sum is σ = 82816272. Its totient is φ = 9675072.

The previous prime is 30351977. The next prime is 30352039. The reversal of 30351996 is 69915303.

It is a super-2 number, since 2×30351996² = 1842487322368032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30351996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5416 + ... + 9488.

Almost surely, 2^30351996 is an apocalyptic number.

30351996 is a gapful number since it is divisible by the number (36) 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 30351996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41408136).

30351996 is an abundant number, since it is smaller than the sum of its proper divisors (52464276).

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

30351996 is a wasteful number, since it uses less digits than its factorization.

30351996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 30351996 is about 5509.2645607195. The cubic root of 30351996 is about 311.9337877247.

The spelling of 30351996 in words is "thirty million, three hundred fifty-one thousand, nine hundred ninety-six".