172419890 has 8 divisors (see below), whose sum is σ = 310355820. Its totient is φ = 68967952.

The previous prime is 172419881. The next prime is 172419901. The reversal of 172419890 is 98914271.

172419890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 172318129 + 101761 = 13127^2 + 319^2 .

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

It is a super-2 number, since 2×172419890² = 59457236935224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8620985 + ... + 8621004.

Almost surely, 2^172419890 is an apocalyptic number.

172419890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172419890 is a deficient number, since it is larger than the sum of its proper divisors (137935930).

172419890 is a wasteful number, since it uses less digits than its factorization.

172419890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17241996.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 172419890 is about 13130.8754468238. The cubic root of 172419890 is about 556.5819541134.

The spelling of 172419890 in words is "one hundred seventy-two million, four hundred nineteen thousand, eight hundred ninety".