99371628 has 18 divisors (see below), whose sum is σ = 251189484. Its totient is φ = 33123864.

The previous prime is 99371627. The next prime is 99371633. The reversal of 99371628 is 82617399.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (99371621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1380126 + ... + 1380197.

Almost surely, 2^99371628 is an apocalyptic number.

It is an amenable number.

99371628 is an abundant number, since it is smaller than the sum of its proper divisors (151817856).

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

99371628 is a wasteful number, since it uses less digits than its factorization.

99371628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760333 (or 2760328 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 99371628 is about 9968.5318878960. The cubic root of 99371628 is about 463.1846250277.

It can be divided in two parts, 99371 and 628, that added together give a palindrome (99999).

The spelling of 99371628 in words is "ninety-nine million, three hundred seventy-one thousand, six hundred twenty-eight".