20256701 has 8 divisors (see below), whose sum is σ = 20579520. Its totient is φ = 19936512.

The previous prime is 20256689. The next prime is 20256737. The reversal of 20256701 is 10765202.

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

It is a cyclic number.

It is not a de Polignac number, because 20256701 - 2⁶ = 20256637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20256751) 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, 19370 + ... + 20388.

It is an arithmetic number, because the mean of its divisors is an integer number (2572440).

Almost surely, 2^20256701 is an apocalyptic number.

It is an amenable number.

20256701 is a deficient number, since it is larger than the sum of its proper divisors (322819).

20256701 is a wasteful number, since it uses less digits than its factorization.

20256701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20256701 is about 4500.7444939699. The cubic root of 20256701 is about 272.5981511031.

The spelling of 20256701 in words is "twenty million, two hundred fifty-six thousand, seven hundred one".