30901900 has 18 divisors (see below), whose sum is σ = 67057340. Its totient is φ = 12360720.

The previous prime is 30901891. The next prime is 30901909. The reversal of 30901900 is 910903.

It is an interprime number because it is at equal distance from previous prime (30901891) and next prime (30901909).

It is a super-2 number, since 2×30901900² = 1909854847220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30901909) 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 5 ways as a sum of consecutive naturals, for example, 154410 + ... + 154609.

Almost surely, 2^30901900 is an apocalyptic number.

It is an amenable number.

30901900 is an abundant number, since it is smaller than the sum of its proper divisors (36155440).

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

30901900 is a wasteful number, since it uses less digits than its factorization.

30901900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309033 (or 309026 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 30901900 is about 5558.9477421541. The cubic root of 30901900 is about 313.8063500953.

The spelling of 30901900 in words is "thirty million, nine hundred one thousand, nine hundred".