36981228 has 24 divisors (see below), whose sum is σ = 86914240. Its totient is φ = 12237840.

The previous prime is 36981179. The next prime is 36981271. The reversal of 36981228 is 82218963.

It is a happy number.

It is a super-2 number, since 2×36981228² = 2735222448775968, which contains 22 as substring.

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, 9418 + ... + 12753.

Almost surely, 2^36981228 is an apocalyptic number.

It is an amenable number.

36981228 is an abundant number, since it is smaller than the sum of its proper divisors (49933012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36981228 is a wasteful number, since it uses less digits than its factorization.

36981228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22317 (or 22315 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 36981228 is about 6081.2192856367. The cubic root of 36981228 is about 333.1658220562.

The spelling of 36981228 in words is "thirty-six million, nine hundred eighty-one thousand, two hundred twenty-eight".