213553044 has 24 divisors (see below), whose sum is σ = 553656320. Its totient is φ = 71184312.

The previous prime is 213553033. The next prime is 213553057. The reversal of 213553044 is 440355312.

213553044 is a `hidden beast` number, since 2 + 1 + 355 + 304 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 213552999 and 213553017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988564 + ... + 988779.

Almost surely, 2^213553044 is an apocalyptic number.

It is an amenable number.

213553044 is an abundant number, since it is smaller than the sum of its proper divisors (340103276).

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

213553044 is a wasteful number, since it uses less digits than its factorization.

213553044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977356 (or 1977348 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 213553044 is about 14613.4542117872. The cubic root of 213553044 is about 597.7256900831.

The spelling of 213553044 in words is "two hundred thirteen million, five hundred fifty-three thousand, forty-four".