92720403840 has 128 divisors (see below), whose sum is σ = 297874206720. Its totient is φ = 24530688000.

The previous prime is 92720403829. The next prime is 92720403847. The reversal of 92720403840 is 4830402729.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92720403847) 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, 53715 + ... + 433965.

It is an arithmetic number, because the mean of its divisors is an integer number (2327142240).

Almost surely, 2^92720403840 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 92720403840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148937103360).

92720403840 is an abundant number, since it is smaller than the sum of its proper divisors (205153802880).

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

92720403840 is a wasteful number, since it uses less digits than its factorization.

92720403840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380400 (or 380388 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 92720403840 in words is "ninety-two billion, seven hundred twenty million, four hundred three thousand, eight hundred forty".