20357073 has 12 divisors (see below), whose sum is σ = 32077968. Its totient is φ = 12337560.

The previous prime is 20357027. The next prime is 20357081. The reversal of 20357073 is 37075302.

20357073 is a `hidden beast` number, since 20 + 3 + 570 + 73 = 666.

It is not a de Polignac number, because 20357073 - 2⁶ = 20357009 is a prime.

It is a super-2 number, since 2×20357073² = 828820842254658, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20357003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102715 + ... + 102912.

It is an arithmetic number, because the mean of its divisors is an integer number (2673164).

Almost surely, 2^20357073 is an apocalyptic number.

It is an amenable number.

20357073 is a deficient number, since it is larger than the sum of its proper divisors (11720895).

20357073 is a wasteful number, since it uses less digits than its factorization.

20357073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205644 (or 205641 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 20357073 is about 4511.8813149284. The cubic root of 20357073 is about 273.0476509826.

The spelling of 20357073 in words is "twenty million, three hundred fifty-seven thousand, seventy-three".