99707628 has 48 divisors (see below), whose sum is σ = 238484736. Its totient is φ = 32410560.

The previous prime is 99707623. The next prime is 99707653. The reversal of 99707628 is 82670799.

It is a super-2 number, since 2×99707628² = 19883222162772768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99707623) 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, 133825 + ... + 134567.

It is an arithmetic number, because the mean of its divisors is an integer number (4968432).

Almost surely, 2^99707628 is an apocalyptic number.

It is an amenable number.

99707628 is an abundant number, since it is smaller than the sum of its proper divisors (138777108).

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

99707628 is a wasteful number, since it uses less digits than its factorization.

99707628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 99707628 is about 9985.3706991779. The cubic root of 99707628 is about 463.7060849187.

The spelling of 99707628 in words is "ninety-nine million, seven hundred seven thousand, six hundred twenty-eight".