20297802 has 16 divisors (see below), whose sum is σ = 46395072. Its totient is φ = 5799360.

The previous prime is 20297789. The next prime is 20297803. The reversal of 20297802 is 20879202.

It is a self number, because there is not a number n which added to its sum of digits gives 20297802.

It is not an unprimeable number, because it can be changed into a prime (20297803) 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, 241599 + ... + 241682.

It is an arithmetic number, because the mean of its divisors is an integer number (2899692).

Almost surely, 2^20297802 is an apocalyptic number.

20297802 is an abundant number, since it is smaller than the sum of its proper divisors (26097270).

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

20297802 is a wasteful number, since it uses less digits than its factorization.

20297802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483293.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20297802 is about 4505.3082025540. The cubic root of 20297802 is about 272.7823944544.

The spelling of 20297802 in words is "twenty million, two hundred ninety-seven thousand, eight hundred two".