3123394560 has 768 divisors, whose sum is σ = 13208832000. Its totient is φ = 690094080.

The previous prime is 3123394531. The next prime is 3123394567. The reversal of 3123394560 is 654933213.

It is a happy number.

3123394560 is a `hidden beast` number, since 3 + 1 + 2 + 3 + 3 + 94 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (768).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123394567) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39536601 + ... + 39536679.

It is an arithmetic number, because the mean of its divisors is an integer number (17199000).

Almost surely, 2^3123394560 is an apocalyptic number.

3123394560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3123394560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6604416000).

3123394560 is an abundant number, since it is smaller than the sum of its proper divisors (10085437440).

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

3123394560 is a wasteful number, since it uses less digits than its factorization.

3123394560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 3123394560 is about 55887.3381008615. The cubic root of 3123394560 is about 1461.7584616847.

The spelling of 3123394560 in words is "three billion, one hundred twenty-three million, three hundred ninety-four thousand, five hundred sixty".