79470144 has 84 divisors (see below), whose sum is σ = 245331996. Its totient is φ = 24450048.

The previous prime is 79470137. The next prime is 79470163. The reversal of 79470144 is 44107497.

It can be written as a sum of positive squares in 2 ways, for example, as 53582400 + 25887744 = 7320^2 + 5088^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 79470099 and 79470108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2182 + ... + 12794.

It is an arithmetic number, because the mean of its divisors is an integer number (2920619).

Almost surely, 2^79470144 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 79470144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122665998).

79470144 is an abundant number, since it is smaller than the sum of its proper divisors (165861852).

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

79470144 is a wasteful number, since it uses less digits than its factorization.

79470144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644 (or 10631 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 79470144 is about 8914.6028515016. The cubic root of 79470144 is about 429.9335466082.

The spelling of 79470144 in words is "seventy-nine million, four hundred seventy thousand, one hundred forty-four".