1402756656 has 160 divisors (see below), whose sum is σ = 4242014208. Its totient is φ = 391184640.

The previous prime is 1402756639. The next prime is 1402756661. The reversal of 1402756656 is 6566572041.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3029481 + ... + 3029943.

Almost surely, 2^1402756656 is an apocalyptic number.

1402756656 is a gapful number since it is divisible by the number (16) 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 1402756656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2121007104).

1402756656 is an abundant number, since it is smaller than the sum of its proper divisors (2839257552).

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

1402756656 is a wasteful number, since it uses less digits than its factorization.

1402756656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 1402756656 is about 37453.3931173131. The cubic root of 1402756656 is about 1119.4227084450.

The spelling of 1402756656 in words is "one billion, four hundred two million, seven hundred fifty-six thousand, six hundred fifty-six".