20749083 has 16 divisors (see below), whose sum is σ = 29239680. Its totient is φ = 13051584.

The previous prime is 20749073. The next prime is 20749103. The reversal of 20749083 is 38094702.

It is not a de Polignac number, because 20749083 - 2⁴ = 20749067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20749063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17260 + ... + 18422.

It is an arithmetic number, because the mean of its divisors is an integer number (1827480).

Almost surely, 2^20749083 is an apocalyptic number.

20749083 is a deficient number, since it is larger than the sum of its proper divisors (8490597).

20749083 is a wasteful number, since it uses less digits than its factorization.

20749083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20749083 is about 4555.1161346337. The cubic root of 20749083 is about 274.7891849870.

The spelling of 20749083 in words is "twenty million, seven hundred forty-nine thousand, eighty-three".