172874390 has 32 divisors (see below), whose sum is σ = 336631680. Its totient is φ = 63540864.

The previous prime is 172874381. The next prime is 172874399. The reversal of 172874390 is 93478271.

It is an interprime number because it is at equal distance from previous prime (172874381) and next prime (172874399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172874399) 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, 26867 + ... + 32673.

It is an arithmetic number, because the mean of its divisors is an integer number (10519740).

Almost surely, 2^172874390 is an apocalyptic number.

172874390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172874390 is a deficient number, since it is larger than the sum of its proper divisors (163757290).

172874390 is a wasteful number, since it uses less digits than its factorization.

172874390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6056.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 172874390 is about 13148.1705951817. The cubic root of 172874390 is about 557.0705762966.

The spelling of 172874390 in words is "one hundred seventy-two million, eight hundred seventy-four thousand, three hundred ninety".