30899892 has 24 divisors (see below), whose sum is σ = 72336096. Its totient is φ = 10266208.

The previous prime is 30899873. The next prime is 30899899. The reversal of 30899892 is 29899803.

It is a super-2 number, since 2×30899892² = 1909606651223328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30899899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258 + ... + 7865.

It is an arithmetic number, because the mean of its divisors is an integer number (3014004).

Almost surely, 2^30899892 is an apocalyptic number.

It is an amenable number.

30899892 is an abundant number, since it is smaller than the sum of its proper divisors (41436204).

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

30899892 is a wasteful number, since it uses less digits than its factorization.

30899892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447 (or 8445 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 30899892 is about 5558.7671294991. The cubic root of 30899892 is about 313.7995529210.

The spelling of 30899892 in words is "thirty million, eight hundred ninety-nine thousand, eight hundred ninety-two".