79902240 has 192 divisors, whose sum is σ = 282683520. Its totient is φ = 18800640.

The previous prime is 79902233. The next prime is 79902247. The reversal of 79902240 is 4220997.

It is an interprime number because it is at equal distance from previous prime (79902233) and next prime (79902247).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (79902247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195156 + ... + 195564.

It is an arithmetic number, because the mean of its divisors is an integer number (1472310).

Almost surely, 2^79902240 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 79902240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141341760).

79902240 is an abundant number, since it is smaller than the sum of its proper divisors (202781280).

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

79902240 is a wasteful number, since it uses less digits than its factorization.

79902240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 79902240 is about 8938.8052892990. The cubic root of 79902240 is about 430.7113518521.

The spelling of 79902240 in words is "seventy-nine million, nine hundred two thousand, two hundred forty".