1402615656 has 64 divisors (see below), whose sum is σ = 4195867200. Its totient is φ = 431573184.

The previous prime is 1402615631. The next prime is 1402615657. The reversal of 1402615656 is 6565162041.

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 1402615656.

It is not an unprimeable number, because it can be changed into a prime (1402615657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246946 + ... + 252561.

It is an arithmetic number, because the mean of its divisors is an integer number (65560425).

Almost surely, 2^1402615656 is an apocalyptic number.

It is an amenable number.

1402615656 is an abundant number, since it is smaller than the sum of its proper divisors (2793251544).

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

1402615656 is a wasteful number, since it uses less digits than its factorization.

1402615656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499535 (or 499525 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1402615656 is about 37451.5107305433. The cubic root of 1402615656 is about 1119.3852004211.

Adding to 1402615656 its reverse (6565162041), we get a palindrome (7967777697).

The spelling of 1402615656 in words is "one billion, four hundred two million, six hundred fifteen thousand, six hundred fifty-six".