2002172390 has 32 divisors (see below), whose sum is σ = 3671529984. Its totient is φ = 785933280.

The previous prime is 2002172377. The next prime is 2002172477. The reversal of 2002172390 is 932712002.

It is a congruent number.

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, 176057 + ... + 187083.

It is an arithmetic number, because the mean of its divisors is an integer number (114735312).

Almost surely, 2^2002172390 is an apocalyptic number.

2002172390 is a deficient number, since it is larger than the sum of its proper divisors (1669357594).

2002172390 is a wasteful number, since it uses less digits than its factorization.

2002172390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11372.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 2002172390 is about 44745.6410167516. The cubic root of 2002172390 is about 1260.3770581450.

Adding to 2002172390 its reverse (932712002), we get a palindrome (2934884392).

The spelling of 2002172390 in words is "two billion, two million, one hundred seventy-two thousand, three hundred ninety".