220178132 has 6 divisors (see below), whose sum is σ = 385311738. Its totient is φ = 110089064.

The previous prime is 220178131. The next prime is 220178183. The reversal of 220178132 is 231871022.

It can be written as a sum of positive squares in only one way, i.e., 161900176 + 58277956 = 12724^2 + 7634^2 .

It is a super-2 number, since 2×220178132² = 96956819622018848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220178131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522263 + ... + 27522270.

It is an arithmetic number, because the mean of its divisors is an integer number (64218623).

Almost surely, 2^220178132 is an apocalyptic number.

It is an amenable number.

220178132 is a deficient number, since it is larger than the sum of its proper divisors (165133606).

220178132 is a wasteful number, since it uses less digits than its factorization.

220178132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55044537 (or 55044535 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 220178132 is about 14838.4005876644. The cubic root of 220178132 is about 603.8439614172.

The spelling of 220178132 in words is "two hundred twenty million, one hundred seventy-eight thousand, one hundred thirty-two".