100649228 has 12 divisors (see below), whose sum is σ = 176325072. Its totient is φ = 50270640.

The previous prime is 100649177. The next prime is 100649249. The reversal of 100649228 is 822946001.

It is a junction number, because it is equal to n+sod(n) for n = 100649194 and 100649203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9143 + ... + 16878.

It is an arithmetic number, because the mean of its divisors is an integer number (14693756).

Almost surely, 2^100649228 is an apocalyptic number.

It is an amenable number.

100649228 is a deficient number, since it is larger than the sum of its proper divisors (75675844).

100649228 is a wasteful number, since it uses less digits than its factorization.

100649228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26992 (or 26990 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 100649228 is about 10032.4088832144. The cubic root of 100649228 is about 465.1612005178.

The spelling of 100649228 in words is "one hundred million, six hundred forty-nine thousand, two hundred twenty-eight".