79155144 has 160 divisors (see below), whose sum is σ = 238360320. Its totient is φ = 24482304.

The previous prime is 79155143. The next prime is 79155149. The reversal of 79155144 is 44155197.

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 = 79155099 and 79155108.

It is not an unprimeable number, because it can be changed into a prime (79155143) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 700432 + ... + 700544.

It is an arithmetic number, because the mean of its divisors is an integer number (1489752).

Almost surely, 2^79155144 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 79155144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119180160).

79155144 is an abundant number, since it is smaller than the sum of its proper divisors (159205176).

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

79155144 is a wasteful number, since it uses less digits than its factorization.

79155144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 188 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 79155144 is about 8896.9176684962. The cubic root of 79155144 is about 429.3647443251.

The spelling of 79155144 in words is "seventy-nine million, one hundred fifty-five thousand, one hundred forty-four".