57280630 has 32 divisors (see below), whose sum is σ = 118402560. Its totient is φ = 19732320.

The previous prime is 57280627. The next prime is 57280673. The reversal of 57280630 is 3608275.

57280630 = T₃₄₈ + T₃₄₉ + ... + T₇₂₇.

It is a junction number, because it is equal to n+sod(n) for n = 57280592 and 57280601.

It is a congruent number.

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, 11614 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (3700080).

Almost surely, 2^57280630 is an apocalyptic number.

57280630 is an abundant number, since it is smaller than the sum of its proper divisors (61121930).

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

57280630 is a wasteful number, since it uses less digits than its factorization.

57280630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27444.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 57280630 is about 7568.3967919236. The cubic root of 57280630 is about 385.4806612543.

The spelling of 57280630 in words is "fifty-seven million, two hundred eighty thousand, six hundred thirty".