30630636 has 36 divisors (see below), whose sum is σ = 80297672. Its totient is φ = 10209888.

The previous prime is 30630631. The next prime is 30630637. The reversal of 30630636 is 63603603.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30630631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14785 + ... + 16728.

Almost surely, 2^30630636 is an apocalyptic number.

30630636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30630636 is an abundant number, since it is smaller than the sum of its proper divisors (49667036).

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

30630636 is a wasteful number, since it uses less digits than its factorization.

30630636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31532 (or 31518 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

The square root of 30630636 is about 5534.4950989228. The cubic root of 30630636 is about 312.8854286411.

The spelling of 30630636 in words is "thirty million, six hundred thirty thousand, six hundred thirty-six".