220251992 has 8 divisors (see below), whose sum is σ = 412972500. Its totient is φ = 110125992.

The previous prime is 220251973. The next prime is 220252061. The reversal of 220251992 is 299152022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765742 + ... + 13765757.

Almost surely, 2^220251992 is an apocalyptic number.

It is an amenable number.

220251992 is a deficient number, since it is larger than the sum of its proper divisors (192720508).

220251992 is a wasteful number, since it uses less digits than its factorization.

220251992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27531505 (or 27531501 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 220251992 is about 14840.8891916893. The cubic root of 220251992 is about 603.9114748262.

The spelling of 220251992 in words is "two hundred twenty million, two hundred fifty-one thousand, nine hundred ninety-two".