172406494 has 32 divisors (see below), whose sum is σ = 294497280. Its totient is φ = 75040992.

The previous prime is 172406491. The next prime is 172406501. The reversal of 172406494 is 494604271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172406491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129259 + ... + 130585.

It is an arithmetic number, because the mean of its divisors is an integer number (9203040).

Almost surely, 2^172406494 is an apocalyptic number.

172406494 is a deficient number, since it is larger than the sum of its proper divisors (122090786).

172406494 is a wasteful number, since it uses less digits than its factorization.

172406494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 172406494 is about 13130.3653414519. The cubic root of 172406494 is about 556.5675393708.

The spelling of 172406494 in words is "one hundred seventy-two million, four hundred six thousand, four hundred ninety-four".