1438754256 has 30 divisors (see below), whose sum is σ = 4026514050. Its totient is φ = 479584704.

The previous prime is 1438754249. The next prime is 1438754297. The reversal of 1438754256 is 6524578341.

1438754256 is a `hidden beast` number, since 14 + 387 + 5 + 4 + 256 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1149210000 + 289544256 = 33900^2 + 17016^2 .

It is a super-2 number, since 2×1438754256² = 4140027618316227072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4995531 + ... + 4995818.

It is an arithmetic number, because the mean of its divisors is an integer number (134217135).

Almost surely, 2^1438754256 is an apocalyptic number.

1438754256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1438754256 is an abundant number, since it is smaller than the sum of its proper divisors (2587759794).

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

1438754256 is a wasteful number, since it uses less digits than its factorization.

1438754256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9991363 (or 9991354 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 1438754256 is about 37930.9142520979. The cubic root of 1438754256 is about 1128.9175046020.

The spelling of 1438754256 in words is "one billion, four hundred thirty-eight million, seven hundred fifty-four thousand, two hundred fifty-six".