172845494 has 8 divisors (see below), whose sum is σ = 274519368. Its totient is φ = 81339040.

The previous prime is 172845479. The next prime is 172845499. The reversal of 172845494 is 494548271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×172845494² = 59751129592208072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172845499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2541812 + ... + 2541879.

It is an arithmetic number, because the mean of its divisors is an integer number (34314921).

Almost surely, 2^172845494 is an apocalyptic number.

172845494 is a deficient number, since it is larger than the sum of its proper divisors (101673874).

172845494 is a wasteful number, since it uses less digits than its factorization.

172845494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083710.

The product of its digits is 322560, while the sum is 44.

The square root of 172845494 is about 13147.0716891633. The cubic root of 172845494 is about 557.0395364024.

The spelling of 172845494 in words is "one hundred seventy-two million, eight hundred forty-five thousand, four hundred ninety-four".