1356382440 has 96 divisors (see below), whose sum is σ = 5038001280. Its totient is φ = 310029696.

The previous prime is 1356382439. The next prime is 1356382471. The reversal of 1356382440 is 442836531.

1356382440 is a `hidden beast` number, since 13 + 5 + 638 + 2 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1356382395 and 1356382404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266604 + ... + 271643.

It is an arithmetic number, because the mean of its divisors is an integer number (52479180).

Almost surely, 2^1356382440 is an apocalyptic number.

1356382440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356382440 is an abundant number, since it is smaller than the sum of its proper divisors (3681618840).

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

1356382440 is a wasteful number, since it uses less digits than its factorization.

1356382440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538271 (or 538264 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 1356382440 is about 36829.0977353505. The cubic root of 1356382440 is about 1106.9484238474.

The spelling of 1356382440 in words is "one billion, three hundred fifty-six million, three hundred eighty-two thousand, four hundred forty".