79452140 has 24 divisors (see below), whose sum is σ = 168473760. Its totient is φ = 31471488.

The previous prime is 79452127. The next prime is 79452161. The reversal of 79452140 is 4125497.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 79452097 and 79452106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17225 + ... + 21344.

It is an arithmetic number, because the mean of its divisors is an integer number (7019740).

Almost surely, 2^79452140 is an apocalyptic number.

It is an amenable number.

79452140 is an abundant number, since it is smaller than the sum of its proper divisors (89021620).

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

79452140 is a wasteful number, since it uses less digits than its factorization.

79452140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38681 (or 38679 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 79452140 is about 8913.5929904837. The cubic root of 79452140 is about 429.9010769377.

The spelling of 79452140 in words is "seventy-nine million, four hundred fifty-two thousand, one hundred forty".