2172512390 has 32 divisors (see below), whose sum is σ = 3939027840. Its totient is φ = 862694784.

The previous prime is 2172512389. The next prime is 2172512423. The reversal of 2172512390 is 932152712.

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, 890252 + ... + 892688.

It is an arithmetic number, because the mean of its divisors is an integer number (123094620).

Almost surely, 2^2172512390 is an apocalyptic number.

2172512390 is a deficient number, since it is larger than the sum of its proper divisors (1766515450).

2172512390 is a wasteful number, since it uses less digits than its factorization.

2172512390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2172512390 is about 46610.2176566469. The cubic root of 2172512390 is about 1295.1520401087.

The spelling of 2172512390 in words is "two billion, one hundred seventy-two million, five hundred twelve thousand, three hundred ninety".