30796920 has 288 divisors, whose sum is σ = 126977760. Its totient is φ = 6336000.

The previous prime is 30796873. The next prime is 30796933. The reversal of 30796920 is 2969703.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 304870 + ... + 304970.

It is an arithmetic number, because the mean of its divisors is an integer number (440895).

Almost surely, 2^30796920 is an apocalyptic number.

30796920 is a gapful number since it is divisible by the number (30) 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 30796920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63488880).

30796920 is an abundant number, since it is smaller than the sum of its proper divisors (96180840).

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

30796920 is a wasteful number, since it uses less digits than its factorization.

30796920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 30796920 is about 5549.4972745286. The cubic root of 30796920 is about 313.4505923984.

It can be divided in two parts, 3079 and 6920, that added together give a palindrome (9999).

The spelling of 30796920 in words is "thirty million, seven hundred ninety-six thousand, nine hundred twenty".