30899886 has 32 divisors (see below), whose sum is σ = 63634560. Its totient is φ = 9997344.

The previous prime is 30899873. The next prime is 30899899. The reversal of 30899886 is 68899803.

It is an interprime number because it is at equal distance from previous prime (30899873) and next prime (30899899).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58821 + ... + 59343.

It is an arithmetic number, because the mean of its divisors is an integer number (1988580).

Almost surely, 2^30899886 is an apocalyptic number.

30899886 is an abundant number, since it is smaller than the sum of its proper divisors (32734674).

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

30899886 is a wasteful number, since it uses less digits than its factorization.

30899886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 30899886 is about 5558.7665898111. The cubic root of 30899886 is about 313.7995326103.

The spelling of 30899886 in words is "thirty million, eight hundred ninety-nine thousand, eight hundred eighty-six".