30385656 has 48 divisors (see below), whose sum is σ = 94052400. Its totient is φ = 8681472.

The previous prime is 30385651. The next prime is 30385669. The reversal of 30385656 is 65658303.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30385656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30385651) 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, 29641 + ... + 30648.

It is an arithmetic number, because the mean of its divisors is an integer number (1959425).

Almost surely, 2^30385656 is an apocalyptic number.

30385656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30385656 is an abundant number, since it is smaller than the sum of its proper divisors (63666744).

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

30385656 is a wasteful number, since it uses less digits than its factorization.

30385656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60308 (or 60301 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 30385656 is about 5512.3185684429. The cubic root of 30385656 is about 312.0490554030.

The spelling of 30385656 in words is "thirty million, three hundred eighty-five thousand, six hundred fifty-six".