30890088 has 48 divisors (see below), whose sum is σ = 88585380. Its totient is φ = 9690624.

The previous prime is 30890087. The next prime is 30890089. The reversal of 30890088 is 88009803.

It is an interprime number because it is at equal distance from previous prime (30890087) and next prime (30890089).

It can be written as a sum of positive squares in 2 ways, for example, as 28323684 + 2566404 = 5322^2 + 1602^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30890087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11395 + ... + 13842.

Almost surely, 2^30890088 is an apocalyptic number.

It is an amenable number.

30890088 is an abundant number, since it is smaller than the sum of its proper divisors (57695292).

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

30890088 is a wasteful number, since it uses less digits than its factorization.

30890088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25266 (or 25259 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 30890088 is about 5557.8852093220. The cubic root of 30890088 is about 313.7663616913.

The spelling of 30890088 in words is "thirty million, eight hundred ninety thousand, eighty-eight".