172404019 has 4 divisors (see below), whose sum is σ = 172517296. Its totient is φ = 172290744.

The previous prime is 172403993. The next prime is 172404041. The reversal of 172404019 is 910404271.

172404019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172404019 is a prime.

It is a super-2 number, since 2×172404019² = 59446291534704722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172404059) 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, 54324 + ... + 57409.

It is an arithmetic number, because the mean of its divisors is an integer number (43129324).

Almost surely, 2^172404019 is an apocalyptic number.

172404019 is a deficient number, since it is larger than the sum of its proper divisors (113277).

172404019 is a wasteful number, since it uses less digits than its factorization.

172404019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113276.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 172404019 is about 13130.2710939264. The cubic root of 172404019 is about 556.5648760697.

The spelling of 172404019 in words is "one hundred seventy-two million, four hundred four thousand, nineteen".