20737057 has 8 divisors (see below), whose sum is σ = 23234112. Its totient is φ = 18342000.

The previous prime is 20737049. The next prime is 20737063. The reversal of 20737057 is 75073702.

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

It is a cyclic number.

It is not a de Polignac number, because 20737057 - 2³ = 20737049 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (20737757) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25069 + ... + 25882.

It is an arithmetic number, because the mean of its divisors is an integer number (2904264).

Almost surely, 2^20737057 is an apocalyptic number.

It is an amenable number.

20737057 is a deficient number, since it is larger than the sum of its proper divisors (2497055).

20737057 is a wasteful number, since it uses less digits than its factorization.

20737057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50999.

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 20737057 is about 4553.7958891457. The cubic root of 20737057 is about 274.7360862004.

The spelling of 20737057 in words is "twenty million, seven hundred thirty-seven thousand, fifty-seven".