30623885 has 12 divisors (see below), whose sum is σ = 39039348. Its totient is φ = 23056896.

The previous prime is 30623849. The next prime is 30623893. The reversal of 30623885 is 58832603.

It can be written as a sum of positive squares in 6 ways, for example, as 175561 + 30448324 = 419^2 + 5518^2 .

It is not a de Polignac number, because 30623885 - 2²⁴ = 13846669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9152 + ... + 12041.

It is an arithmetic number, because the mean of its divisors is an integer number (3253279).

Almost surely, 2^30623885 is an apocalyptic number.

It is an amenable number.

30623885 is a deficient number, since it is larger than the sum of its proper divisors (8415463).

30623885 is a wasteful number, since it uses less digits than its factorization.

30623885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21232 (or 21215 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 30623885 is about 5533.8851632465. The cubic root of 30623885 is about 312.8624402760.

The spelling of 30623885 in words is "thirty million, six hundred twenty-three thousand, eight hundred eighty-five".