20604057 has 8 divisors (see below), whose sum is σ = 28358400. Its totient is φ = 13292880.

The previous prime is 20604047. The next prime is 20604107. The reversal of 20604057 is 75040602.

It is a happy number.

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

It is not a de Polignac number, because 20604057 - 2⁶ = 20603993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20604047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110682 + ... + 110867.

It is an arithmetic number, because the mean of its divisors is an integer number (3544800).

Almost surely, 2^20604057 is an apocalyptic number.

It is an amenable number.

20604057 is a deficient number, since it is larger than the sum of its proper divisors (7754343).

20604057 is a wasteful number, since it uses less digits than its factorization.

20604057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221583.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20604057 is about 4539.1691971109. The cubic root of 20604057 is about 274.1474733143.

Adding to 20604057 its reverse (75040602), we get a palindrome (95644659).

The spelling of 20604057 in words is "twenty million, six hundred four thousand, fifty-seven".