1356304240 has 20 divisors (see below), whose sum is σ = 3153407544. Its totient is φ = 542521664.

The previous prime is 1356304223. The next prime is 1356304241. The reversal of 1356304240 is 424036531.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1356304240² = 3679122382883955200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1356304199 and 1356304208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356304241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8476822 + ... + 8476981.

Almost surely, 2^1356304240 is an apocalyptic number.

1356304240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356304240 is an abundant number, since it is smaller than the sum of its proper divisors (1797103304).

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

1356304240 is a wasteful number, since it uses less digits than its factorization.

1356304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16953816 (or 16953810 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1356304240 is about 36828.0360595023. The cubic root of 1356304240 is about 1106.9271503412.

The spelling of 1356304240 in words is "one billion, three hundred fifty-six million, three hundred four thousand, two hundred forty".