92990640 has 80 divisors (see below), whose sum is σ = 292624128. Its totient is φ = 24423168.

The previous prime is 92990609. The next prime is 92990659. The reversal of 92990640 is 4609929.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13189 + ... + 18971.

Almost surely, 2^92990640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 92990640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146312064).

92990640 is an abundant number, since it is smaller than the sum of its proper divisors (199633488).

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

92990640 is a wasteful number, since it uses less digits than its factorization.

92990640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866 (or 5860 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 92990640 is about 9643.1654553886. The cubic root of 92990640 is about 453.0502894820.

The spelling of 92990640 in words is "ninety-two million, nine hundred ninety thousand, six hundred forty".