57649212 has 96 divisors (see below), whose sum is σ = 157194240. Its totient is φ = 18247680.

The previous prime is 57649199. The next prime is 57649217. The reversal of 57649212 is 21294675.

57649212 is a `hidden beast` number, since 5 + 7 + 649 + 2 + 1 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

Its product of digits (30240) is a multiple of the sum of its prime divisors (360).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57649217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224188 + ... + 224444.

It is an arithmetic number, because the mean of its divisors is an integer number (1637440).

Almost surely, 2^57649212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57649212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78597120).

57649212 is an abundant number, since it is smaller than the sum of its proper divisors (99545028).

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

57649212 is a wasteful number, since it uses less digits than its factorization.

57649212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 360 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 57649212 is about 7592.7078173732. The cubic root of 57649212 is about 386.3057078666.

The spelling of 57649212 in words is "fifty-seven million, six hundred forty-nine thousand, two hundred twelve".