100621038 has 16 divisors (see below), whose sum is σ = 229991040. Its totient is φ = 28748856.

The previous prime is 100621013. The next prime is 100621043. The reversal of 100621038 is 830126001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 1197828 + ... + 1197911.

It is an arithmetic number, because the mean of its divisors is an integer number (14374440).

Almost surely, 2^100621038 is an apocalyptic number.

100621038 is an abundant number, since it is smaller than the sum of its proper divisors (129370002).

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

100621038 is a wasteful number, since it uses less digits than its factorization.

100621038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395751.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 100621038 is about 10031.0038381011. The cubic root of 100621038 is about 465.1177687601.

Adding to 100621038 its reverse (830126001), we get a palindrome (930747039).

The spelling of 100621038 in words is "one hundred million, six hundred twenty-one thousand, thirty-eight".