30885144 has 16 divisors (see below), whose sum is σ = 77212920. Its totient is φ = 10295040.

The previous prime is 30885139. The next prime is 30885161. The reversal of 30885144 is 44158803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643417 + ... + 643464.

Almost surely, 2^30885144 is an apocalyptic number.

It is an amenable number.

30885144 is an abundant number, since it is smaller than the sum of its proper divisors (46327776).

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

30885144 is a wasteful number, since it uses less digits than its factorization.

30885144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286890 (or 1286886 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 30885144 is about 5557.4404180342. The cubic root of 30885144 is about 313.7496212225.

The spelling of 30885144 in words is "thirty million, eight hundred eighty-five thousand, one hundred forty-four".