1604770056 has 144 divisors (see below), whose sum is σ = 4662730800. Its totient is φ = 517065120.

The previous prime is 1604770033. The next prime is 1604770061. The reversal of 1604770056 is 6500774061.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1604770056.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1867755 + ... + 1868613.

It is an arithmetic number, because the mean of its divisors is an integer number (32380075).

Almost surely, 2^1604770056 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 1604770056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331365400).

1604770056 is an abundant number, since it is smaller than the sum of its proper divisors (3057960744).

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

1604770056 is an equidigital number, since it uses as much as digits as its factorization.

1604770056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 1604770056 is about 40059.5813258202. The cubic root of 1604770056 is about 1170.7682528310.

The spelling of 1604770056 in words is "one billion, six hundred four million, seven hundred seventy thousand, fifty-six".