20087045 has 16 divisors (see below), whose sum is σ = 26661312. Its totient is φ = 14405760.

The previous prime is 20087021. The next prime is 20087059. The reversal of 20087045 is 54078002.

It is not a de Polignac number, because 20087045 - 2²⁴ = 3309829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (1666332).

Almost surely, 2^20087045 is an apocalyptic number.

It is an amenable number.

20087045 is a deficient number, since it is larger than the sum of its proper divisors (6574267).

20087045 is a wasteful number, since it uses less digits than its factorization.

20087045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20087045 is about 4481.8573158904. The cubic root of 20087045 is about 271.8349858757.

The spelling of 20087045 in words is "twenty million, eighty-seven thousand, forty-five".