100724407 has 4 divisors (see below), whose sum is σ = 115113616. Its totient is φ = 86335200.

The previous prime is 100724381. The next prime is 100724411. The reversal of 100724407 is 704427001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 100724407 - 2¹⁹ = 100200119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100724497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7194594 + ... + 7194607.

It is an arithmetic number, because the mean of its divisors is an integer number (28778404).

Almost surely, 2^100724407 is an apocalyptic number.

100724407 is a deficient number, since it is larger than the sum of its proper divisors (14389209).

100724407 is an equidigital number, since it uses as much as digits as its factorization.

100724407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14389208.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 100724407 is about 10036.1549908319. The cubic root of 100724407 is about 465.2769876307.

The spelling of 100724407 in words is "one hundred million, seven hundred twenty-four thousand, four hundred seven".