20357080 has 32 divisors (see below), whose sum is σ = 47283840. Its totient is φ = 7879680.

The previous prime is 20357027. The next prime is 20357081. The reversal of 20357080 is 8075302.

It is a super-2 number, since 2×20357080² = 828821412252800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20357081) 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, 6969 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (1477620).

Almost surely, 2^20357080 is an apocalyptic number.

20357080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20357080 is an abundant number, since it is smaller than the sum of its proper divisors (26926760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20357080 is a wasteful number, since it uses less digits than its factorization.

20357080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16459 (or 16455 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20357080 is about 4511.8820906580. The cubic root of 20357080 is about 273.0476822794.

The spelling of 20357080 in words is "twenty million, three hundred fifty-seven thousand, eighty".