30666252 has 12 divisors (see below), whose sum is σ = 71554616. Its totient is φ = 10222080.

The previous prime is 30666241. The next prime is 30666257. The reversal of 30666252 is 25266603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30666257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277749 + ... + 1277772.

Almost surely, 2^30666252 is an apocalyptic number.

It is an amenable number.

30666252 is an abundant number, since it is smaller than the sum of its proper divisors (40888364).

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

30666252 is a wasteful number, since it uses less digits than its factorization.

30666252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555528 (or 2555526 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 30666252 is about 5537.7118018185. The cubic root of 30666252 is about 313.0066516226.

The spelling of 30666252 in words is "thirty million, six hundred sixty-six thousand, two hundred fifty-two".