1656874272 has 48 divisors (see below), whose sum is σ = 4355763552. Its totient is φ = 551470080.

The previous prime is 1656874259. The next prime is 1656874279. The reversal of 1656874272 is 2724786561.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1656874279) 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, 53848 + ... + 78824.

It is an arithmetic number, because the mean of its divisors is an integer number (90745074).

Almost surely, 2^1656874272 is an apocalyptic number.

1656874272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656874272 is an abundant number, since it is smaller than the sum of its proper divisors (2698889280).

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

1656874272 is a wasteful number, since it uses less digits than its factorization.

1656874272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25681 (or 25673 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 1656874272 is about 40704.7205124909. The cubic root of 1656874272 is about 1183.3045054054.

The spelling of 1656874272 in words is "one billion, six hundred fifty-six million, eight hundred seventy-four thousand, two hundred seventy-two".