20570368 has 72 divisors (see below), whose sum is σ = 50593088. Its totient is φ = 8128512.

The previous prime is 20570353. The next prime is 20570377. The reversal of 20570368 is 86307502.

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, 22855 + ... + 23737.

Almost surely, 2^20570368 is an apocalyptic number.

20570368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20570368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25296544).

20570368 is an abundant number, since it is smaller than the sum of its proper divisors (30022720).

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

20570368 is an equidigital number, since it uses as much as digits as its factorization.

20570368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20570368 is about 4535.4567575934. The cubic root of 20570368 is about 273.9979753700.

The spelling of 20570368 in words is "twenty million, five hundred seventy thousand, three hundred sixty-eight".