1400523256 has 16 divisors (see below), whose sum is σ = 2864706840. Its totient is φ = 636601440.

The previous prime is 1400523253. The next prime is 1400523263. The reversal of 1400523256 is 6523250041.

It is a super-2 number, since 2×1400523256² = 3922930781193683072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400523253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7957431 + ... + 7957606.

Almost surely, 2^1400523256 is an apocalyptic number.

It is an amenable number.

1400523256 is an abundant number, since it is smaller than the sum of its proper divisors (1464183584).

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

1400523256 is a wasteful number, since it uses less digits than its factorization.

1400523256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15915054 (or 15915050 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1400523256 is about 37423.5655169306. The cubic root of 1400523256 is about 1118.8282963169.

Adding to 1400523256 its reverse (6523250041), we get a palindrome (7923773297).

The spelling of 1400523256 in words is "one billion, four hundred million, five hundred twenty-three thousand, two hundred fifty-six".