20297370 has 32 divisors (see below), whose sum is σ = 48833280. Its totient is φ = 5399360.

The previous prime is 20297363. The next prime is 20297383. The reversal of 20297370 is 7379202.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21100 + ... + 22040.

It is an arithmetic number, because the mean of its divisors is an integer number (1526040).

Almost surely, 2^20297370 is an apocalyptic number.

20297370 is an abundant number, since it is smaller than the sum of its proper divisors (28535910).

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

20297370 is a wasteful number, since it uses less digits than its factorization.

20297370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 20297370 is about 4505.2602588530. The cubic root of 20297370 is about 272.7804592230.

The spelling of 20297370 in words is "twenty million, two hundred ninety-seven thousand, three hundred seventy".