256893753 has 8 divisors (see below), whose sum is σ = 348140416. Its totient is φ = 168454800.

The previous prime is 256893727. The next prime is 256893757. The reversal of 256893753 is 357398652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256893753 - 2¹² = 256889657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256893757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701713 + ... + 702078.

It is an arithmetic number, because the mean of its divisors is an integer number (43517552).

Almost surely, 2^256893753 is an apocalyptic number.

It is an amenable number.

256893753 is a deficient number, since it is larger than the sum of its proper divisors (91246663).

256893753 is a wasteful number, since it uses less digits than its factorization.

256893753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403855.

The product of its digits is 1360800, while the sum is 48.

The square root of 256893753 is about 16027.9054464393. The cubic root of 256893753 is about 635.6984919312.

The spelling of 256893753 in words is "two hundred fifty-six million, eight hundred ninety-three thousand, seven hundred fifty-three".