20748703 has 8 divisors (see below), whose sum is σ = 22545920. Its totient is φ = 19022040.

The previous prime is 20748701. The next prime is 20748709. The reversal of 20748703 is 30784702.

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

It is not a de Polignac number, because 20748703 - 2¹ = 20748701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20748701) 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, 17025 + ... + 18202.

It is an arithmetic number, because the mean of its divisors is an integer number (2818240).

Almost surely, 2^20748703 is an apocalyptic number.

20748703 is a deficient number, since it is larger than the sum of its proper divisors (1797217).

20748703 is a wasteful number, since it uses less digits than its factorization.

20748703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35277.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20748703 is about 4555.0744231022. The cubic root of 20748703 is about 274.7875074746.

The spelling of 20748703 in words is "twenty million, seven hundred forty-eight thousand, seven hundred three".