202028497 has 8 divisors (see below), whose sum is σ = 222217632. Its totient is φ = 183661060.

The previous prime is 202028429. The next prime is 202028507. The reversal of 202028497 is 794820202.

It is a de Polignac number, because none of the positive numbers 2^k-202028497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202028597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74563 + ... + 77224.

It is an arithmetic number, because the mean of its divisors is an integer number (27777204).

Almost surely, 2^202028497 is an apocalyptic number.

It is an amenable number.

202028497 is a deficient number, since it is larger than the sum of its proper divisors (20189135).

202028497 is an equidigital number, since it uses as much as digits as its factorization.

202028497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151820 (or 151798 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 202028497 is about 14213.6728891585. The cubic root of 202028497 is about 586.7740211526.

Adding to 202028497 its reverse (794820202), we get a palindrome (996848699).

The spelling of 202028497 in words is "two hundred two million, twenty-eight thousand, four hundred ninety-seven".