100722408 has 32 divisors (see below), whose sum is σ = 253419360. Its totient is φ = 33359040.

The previous prime is 100722403. The next prime is 100722421. The reversal of 100722408 is 804227001.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (100722403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9598 + ... + 17133.

It is an arithmetic number, because the mean of its divisors is an integer number (7919355).

Almost surely, 2^100722408 is an apocalyptic number.

It is an amenable number.

100722408 is an abundant number, since it is smaller than the sum of its proper divisors (152696952).

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

100722408 is a wasteful number, since it uses less digits than its factorization.

100722408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26897 (or 26893 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 100722408 is about 10036.0554004051. The cubic root of 100722408 is about 465.2739096119.

Adding to 100722408 its reverse (804227001), we get a palindrome (904949409).

The spelling of 100722408 in words is "one hundred million, seven hundred twenty-two thousand, four hundred eight".