172040430 has 16 divisors (see below), whose sum is σ = 412897104. Its totient is φ = 45877440.

The previous prime is 172040419. The next prime is 172040431. The reversal of 172040430 is 34040271.

It is a junction number, because it is equal to n+sod(n) for n = 172040397 and 172040406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172040431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2867311 + ... + 2867370.

It is an arithmetic number, because the mean of its divisors is an integer number (25806069).

Almost surely, 2^172040430 is an apocalyptic number.

172040430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172040430 is an abundant number, since it is smaller than the sum of its proper divisors (240856674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172040430 is a wasteful number, since it uses less digits than its factorization.

172040430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734691.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 172040430 is about 13116.4183373358. The cubic root of 172040430 is about 556.1733475153.

The spelling of 172040430 in words is "one hundred seventy-two million, forty thousand, four hundred thirty".