172023454 has 24 divisors (see below), whose sum is σ = 278505720. Its totient is φ = 79467840.

The previous prime is 172023451. The next prime is 172023461. The reversal of 172023454 is 454320271.

172023454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172023451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62532 + ... + 65224.

It is an arithmetic number, because the mean of its divisors is an integer number (11604405).

Almost surely, 2^172023454 is an apocalyptic number.

172023454 is a deficient number, since it is larger than the sum of its proper divisors (106482266).

172023454 is a wasteful number, since it uses less digits than its factorization.

172023454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 172023454 is about 13115.7711934907. The cubic root of 172023454 is about 556.1550535416.

Subtracting from 172023454 its sum of digits (28), we obtain a triangular number (172023426 = T₁₈₅₄₈).

The spelling of 172023454 in words is "one hundred seventy-two million, twenty-three thousand, four hundred fifty-four".