220672251 has 24 divisors (see below), whose sum is σ = 338120640. Its totient is φ = 138294000.

The previous prime is 220672241. The next prime is 220672253. The reversal of 220672251 is 152276022.

It is not a de Polignac number, because 220672251 - 2⁵ = 220672219 is a prime.

It is a super-2 number, since 2×220672251² = 97392484722814002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220672253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17476 + ... + 27326.

It is an arithmetic number, because the mean of its divisors is an integer number (14088360).

Almost surely, 2^220672251 is an apocalyptic number.

220672251 is a deficient number, since it is larger than the sum of its proper divisors (117448389).

220672251 is a wasteful number, since it uses less digits than its factorization.

220672251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10007 (or 10004 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 220672251 is about 14855.0412655098. The cubic root of 220672251 is about 604.2953351155.

The spelling of 220672251 in words is "two hundred twenty million, six hundred seventy-two thousand, two hundred fifty-one".