30690530 has 32 divisors (see below), whose sum is σ = 60770304. Its totient is φ = 11088576.

The previous prime is 30690521. The next prime is 30690563. The reversal of 30690530 is 3509603.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 30690530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3599 + ... + 8621.

It is an arithmetic number, because the mean of its divisors is an integer number (1899072).

Almost surely, 2^30690530 is an apocalyptic number.

30690530 is a deficient number, since it is larger than the sum of its proper divisors (30079774).

30690530 is a wasteful number, since it uses less digits than its factorization.

30690530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 30690530 is about 5539.9034287612. The cubic root of 30690530 is about 313.0892306848.

The spelling of 30690530 in words is "thirty million, six hundred ninety thousand, five hundred thirty".