220139672 has 8 divisors (see below), whose sum is σ = 412761900. Its totient is φ = 110069832.

The previous prime is 220139669. The next prime is 220139743. The reversal of 220139672 is 276931022.

It is a happy number.

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

It is a super-2 number, since 2×220139672² = 96922950376535168, which contains 22 as substring.

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, 13758722 + ... + 13758737.

Almost surely, 2^220139672 is an apocalyptic number.

It is an amenable number.

220139672 is a deficient number, since it is larger than the sum of its proper divisors (192622228).

220139672 is a wasteful number, since it uses less digits than its factorization.

220139672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27517465 (or 27517461 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 220139672 is about 14837.1045692884. The cubic root of 220139672 is about 603.8088002034.

The spelling of 220139672 in words is "two hundred twenty million, one hundred thirty-nine thousand, six hundred seventy-two".