20333745 has 48 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 10379520.

The previous prime is 20333713. The next prime is 20333759. The reversal of 20333745 is 54733302.

It is not a de Polignac number, because 20333745 - 2⁵ = 20333713 is a prime.

It is a super-2 number, since 2×20333745² = 826922371450050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189982 + ... + 190088.

It is an arithmetic number, because the mean of its divisors is an integer number (766584).

Almost surely, 2^20333745 is an apocalyptic number.

It is an amenable number.

20333745 is a deficient number, since it is larger than the sum of its proper divisors (16462287).

20333745 is a wasteful number, since it uses less digits than its factorization.

20333745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 20333745 is about 4509.2953995053. The cubic root of 20333745 is about 272.9433123050.

It can be divided in two parts, 2033 and 3745, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 20333745 in words is "twenty million, three hundred thirty-three thousand, seven hundred forty-five".