20263870 has 24 divisors (see below), whose sum is σ = 40094712. Its totient is φ = 7368240.

The previous prime is 20263849. The next prime is 20263871. The reversal of 20263870 is 7836202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20263871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7164 + ... + 9583.

It is an arithmetic number, because the mean of its divisors is an integer number (1670613).

Almost surely, 2^20263870 is an apocalyptic number.

20263870 is a deficient number, since it is larger than the sum of its proper divisors (19830842).

20263870 is a wasteful number, since it uses less digits than its factorization.

20263870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16776 (or 16765 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20263870 is about 4501.5408473100. The cubic root of 20263870 is about 272.6303054941.

The spelling of 20263870 in words is "twenty million, two hundred sixty-three thousand, eight hundred seventy".