30922900 has 36 divisors (see below), whose sum is σ = 67495680. Its totient is φ = 12296800.

The previous prime is 30922883. The next prime is 30922901. The reversal of 30922900 is 922903.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30922901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18291 + ... + 19909.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^30922900 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 30922900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33747840).

30922900 is an abundant number, since it is smaller than the sum of its proper divisors (36572780).

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

30922900 is a wasteful number, since it uses less digits than its factorization.

30922900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 30922900 is about 5560.8362680446. The cubic root of 30922900 is about 313.8774184454.

The spelling of 30922900 in words is "thirty million, nine hundred twenty-two thousand, nine hundred".