30528490 has 16 divisors (see below), whose sum is σ = 56724480. Its totient is φ = 11817360.

The previous prime is 30528469. The next prime is 30528539. The reversal of 30528490 is 9482503.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48930 + ... + 49549.

It is an arithmetic number, because the mean of its divisors is an integer number (3545280).

Almost surely, 2^30528490 is an apocalyptic number.

30528490 is a deficient number, since it is larger than the sum of its proper divisors (26195990).

30528490 is a wasteful number, since it uses less digits than its factorization.

30528490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98517.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 30528490 is about 5525.2592699348. The cubic root of 30528490 is about 312.5372414283.

The spelling of 30528490 in words is "thirty million, five hundred twenty-eight thousand, four hundred ninety".