1356492440 has 32 divisors (see below), whose sum is σ = 3059100000. Its totient is φ = 541353984.

The previous prime is 1356492419. The next prime is 1356492443. The reversal of 1356492440 is 442946531.

It is a junction number, because it is equal to n+sod(n) for n = 1356492394 and 1356492403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356492443) 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, 21065 + ... + 56184.

It is an arithmetic number, because the mean of its divisors is an integer number (95596875).

Almost surely, 2^1356492440 is an apocalyptic number.

1356492440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356492440 is an abundant number, since it is smaller than the sum of its proper divisors (1702607560).

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

1356492440 is a wasteful number, since it uses less digits than its factorization.

1356492440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77699 (or 77695 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 1356492440 is about 36830.5910894734. The cubic root of 1356492440 is about 1106.9783468326.

The spelling of 1356492440 in words is "one billion, three hundred fifty-six million, four hundred ninety-two thousand, four hundred forty".