20542595 has 8 divisors (see below), whose sum is σ = 24788400. Its totient is φ = 16342560.

The previous prime is 20542589. The next prime is 20542603. The reversal of 20542595 is 59524502.

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

It is not a de Polignac number, because 20542595 - 2⁶ = 20542531 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10445 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (3098550).

Almost surely, 2^20542595 is an apocalyptic number.

20542595 is a deficient number, since it is larger than the sum of its proper divisors (4245805).

20542595 is a wasteful number, since it uses less digits than its factorization.

20542595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22885.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 20542595 is about 4532.3939590464. The cubic root of 20542595 is about 273.8746074086.

The spelling of 20542595 in words is "twenty million, five hundred forty-two thousand, five hundred ninety-five".