79845480 has 384 divisors, whose sum is σ = 321753600. Its totient is φ = 17487360.

The previous prime is 79845463. The next prime is 79845487. The reversal of 79845480 is 8454897.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79845487) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1698817 + ... + 1698863.

It is an arithmetic number, because the mean of its divisors is an integer number (837900).

Almost surely, 2^79845480 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 79845480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160876800).

79845480 is an abundant number, since it is smaller than the sum of its proper divisors (241908120).

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

79845480 is a wasteful number, since it uses less digits than its factorization.

79845480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 79845480 is about 8935.6298043283. The cubic root of 79845480 is about 430.6093398290.

The spelling of 79845480 in words is "seventy-nine million, eight hundred forty-five thousand, four hundred eighty".