220138958 has 16 divisors (see below), whose sum is σ = 356125056. Its totient is φ = 101455200.

The previous prime is 220138943. The next prime is 220138981. The reversal of 220138958 is 859831022.

It is a super-2 number, since 2×220138958² = 96922321658651528, 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 in 7 ways as a sum of consecutive naturals, for example, 13283 + ... + 24833.

It is an arithmetic number, because the mean of its divisors is an integer number (22257816).

Almost surely, 2^220138958 is an apocalyptic number.

220138958 is a deficient number, since it is larger than the sum of its proper divisors (135986098).

220138958 is a wasteful number, since it uses less digits than its factorization.

220138958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 220138958 is about 14837.0805079706. The cubic root of 220138958 is about 603.8081474058.

The spelling of 220138958 in words is "two hundred twenty million, one hundred thirty-eight thousand, nine hundred fifty-eight".