20392545 has 32 divisors (see below), whose sum is σ = 33685632. Its totient is φ = 10529792.

The previous prime is 20392523. The next prime is 20392577. The reversal of 20392545 is 54529302.

It is not a de Polignac number, because 20392545 - 2⁷ = 20392417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89722 + ... + 89948.

It is an arithmetic number, because the mean of its divisors is an integer number (1052676).

Almost surely, 2^20392545 is an apocalyptic number.

It is an amenable number.

20392545 is a deficient number, since it is larger than the sum of its proper divisors (13293087).

20392545 is a wasteful number, since it uses less digits than its factorization.

20392545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 20392545 is about 4515.8105584712. The cubic root of 20392545 is about 273.2061532398.

The spelling of 20392545 in words is "twenty million, three hundred ninety-two thousand, five hundred forty-five".