100428307 has 4 divisors (see below), whose sum is σ = 114775216. Its totient is φ = 86081400.

The previous prime is 100428301. The next prime is 100428329. The reversal of 100428307 is 703824001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703824001 = 3491 ⋅201611.

It is a cyclic number.

It is not a de Polignac number, because 100428307 - 2²³ = 92039699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100428301) 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, 7173444 + ... + 7173457.

It is an arithmetic number, because the mean of its divisors is an integer number (28693804).

Almost surely, 2^100428307 is an apocalyptic number.

100428307 is a deficient number, since it is larger than the sum of its proper divisors (14346909).

100428307 is an equidigital number, since it uses as much as digits as its factorization.

100428307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14346908.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 100428307 is about 10021.3924681154. The cubic root of 100428307 is about 464.8206145078.

The spelling of 100428307 in words is "one hundred million, four hundred twenty-eight thousand, three hundred seven".