20196570 has 32 divisors (see below), whose sum is σ = 48755520. Its totient is φ = 5354240.

The previous prime is 20196529. The next prime is 20196577. The reversal of 20196570 is 7569102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20196577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3490 + ... + 7250.

It is an arithmetic number, because the mean of its divisors is an integer number (1523610).

Almost surely, 2^20196570 is an apocalyptic number.

20196570 is an abundant number, since it is smaller than the sum of its proper divisors (28558950).

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

20196570 is a wasteful number, since it uses less digits than its factorization.

20196570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 20196570 is about 4494.0594121573. The cubic root of 20196570 is about 272.3281524586.

The spelling of 20196570 in words is "twenty million, one hundred ninety-six thousand, five hundred seventy".