99725628 has 12 divisors (see below), whose sum is σ = 232693160. Its totient is φ = 33241872.

The previous prime is 99725617. The next prime is 99725629. The reversal of 99725628 is 82652799.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99725629) 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, 4155223 + ... + 4155246.

Almost surely, 2^99725628 is an apocalyptic number.

It is an amenable number.

99725628 is an abundant number, since it is smaller than the sum of its proper divisors (132967532).

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

99725628 is a wasteful number, since it uses less digits than its factorization.

99725628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8310476 (or 8310474 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 99725628 is about 9986.2719770693. The cubic root of 99725628 is about 463.7339871882.

The spelling of 99725628 in words is "ninety-nine million, seven hundred twenty-five thousand, six hundred twenty-eight".