2543440392 has 64 divisors (see below), whose sum is σ = 7154592000. Its totient is φ = 837076032.

The previous prime is 2543440387. The next prime is 2543440423. The reversal of 2543440392 is 2930443452.

It is a super-2 number, since 2×2543440392² = 12938178055314227328, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57463 + ... + 91590.

It is an arithmetic number, because the mean of its divisors is an integer number (111790500).

Almost surely, 2^2543440392 is an apocalyptic number.

It is an amenable number.

2543440392 is an abundant number, since it is smaller than the sum of its proper divisors (4611151608).

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

2543440392 is a wasteful number, since it uses less digits than its factorization.

2543440392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149147 (or 149137 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 2543440392 is about 50432.5330714213. The cubic root of 2543440392 is about 1365.0247356947.

The spelling of 2543440392 in words is "two billion, five hundred forty-three million, four hundred forty thousand, three hundred ninety-two".