99742980 has 24 divisors (see below), whose sum is σ = 279280512. Its totient is φ = 26598112.

The previous prime is 99742969. The next prime is 99742999. The reversal of 99742980 is 8924799.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831132 + ... + 831251.

It is an arithmetic number, because the mean of its divisors is an integer number (11636688).

Almost surely, 2^99742980 is an apocalyptic number.

It is an amenable number.

99742980 is an abundant number, since it is smaller than the sum of its proper divisors (179537532).

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

99742980 is a wasteful number, since it uses less digits than its factorization.

99742980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662395 (or 1662393 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 99742980 is about 9987.1407319613. The cubic root of 99742980 is about 463.7608817977.

The spelling of 99742980 in words is "ninety-nine million, seven hundred forty-two thousand, nine hundred eighty".