100628815 has 16 divisors (see below), whose sum is σ = 141216768. Its totient is φ = 67396896.

The previous prime is 100628813. The next prime is 100628893. The reversal of 100628815 is 518826001.

It is not a de Polignac number, because 100628815 - 2¹ = 100628813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100628813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31927 + ... + 34936.

It is an arithmetic number, because the mean of its divisors is an integer number (8826048).

Almost surely, 2^100628815 is an apocalyptic number.

100628815 is a deficient number, since it is larger than the sum of its proper divisors (40587953).

100628815 is an equidigital number, since it uses as much as digits as its factorization.

100628815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66918.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 100628815 is about 10031.3914787531. The cubic root of 100628815 is about 465.1297514354.

The spelling of 100628815 in words is "one hundred million, six hundred twenty-eight thousand, eight hundred fifteen".