36691228 has 48 divisors (see below), whose sum is σ = 77672448. Its totient is φ = 14832000.

The previous prime is 36691183. The next prime is 36691231. The reversal of 36691228 is 82219663.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35073 + ... + 36103.

It is an arithmetic number, because the mean of its divisors is an integer number (1618176).

Almost surely, 2^36691228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36691228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38836224).

36691228 is an abundant number, since it is smaller than the sum of its proper divisors (40981220).

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

36691228 is a wasteful number, since it uses less digits than its factorization.

36691228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114 (or 1112 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 36691228 is about 6057.3284540299. The cubic root of 36691228 is about 332.2926606042.

The spelling of 36691228 in words is "thirty-six million, six hundred ninety-one thousand, two hundred twenty-eight".