1656288452 has 24 divisors (see below), whose sum is σ = 3567391296. Its totient is φ = 655234848.

The previous prime is 1656288449. The next prime is 1656288457. The reversal of 1656288452 is 2548826561.

It is a junction number, because it is equal to n+sod(n) for n = 1656288397 and 1656288406.

It is not an unprimeable number, because it can be changed into a prime (1656288457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274758 + ... + 2275485.

It is an arithmetic number, because the mean of its divisors is an integer number (148641304).

Almost surely, 2^1656288452 is an apocalyptic number.

It is an amenable number.

1656288452 is an abundant number, since it is smaller than the sum of its proper divisors (1911102844).

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

1656288452 is a wasteful number, since it uses less digits than its factorization.

1656288452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550267 (or 4550265 counting only the distinct ones).

The product of its digits is 921600, while the sum is 47.

The square root of 1656288452 is about 40697.5239050240. The cubic root of 1656288452 is about 1183.1650288880.

The spelling of 1656288452 in words is "one billion, six hundred fifty-six million, two hundred eighty-eight thousand, four hundred fifty-two".