156170228 has 12 divisors (see below), whose sum is σ = 289374372. Its totient is φ = 73491840.

The previous prime is 156170221. The next prime is 156170257. The reversal of 156170228 is 822071651.

It can be written as a sum of positive squares in 2 ways, for example, as 81036004 + 75134224 = 9002^2 + 8668^2 .

It is a super-2 number, since 2×156170228² = 48778280227143968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156170194 and 156170203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156170221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148243 + ... + 1148378.

It is an arithmetic number, because the mean of its divisors is an integer number (24114531).

Almost surely, 2^156170228 is an apocalyptic number.

It is an amenable number.

156170228 is a deficient number, since it is larger than the sum of its proper divisors (133204144).

156170228 is a wasteful number, since it uses less digits than its factorization.

156170228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296642 (or 2296640 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 156170228 is about 12496.8087126274. The cubic root of 156170228 is about 538.5169963372.

The spelling of 156170228 in words is "one hundred fifty-six million, one hundred seventy thousand, two hundred twenty-eight".