172001290 has 32 divisors (see below), whose sum is σ = 318193920. Its totient is φ = 66905664.

The previous prime is 172001287. The next prime is 172001293. The reversal of 172001290 is 92100271.

It is an interprime number because it is at equal distance from previous prime (172001287) and next prime (172001293).

It is not an unprimeable number, because it can be changed into a prime (172001293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114927 + ... + 116413.

It is an arithmetic number, because the mean of its divisors is an integer number (9943560).

Almost surely, 2^172001290 is an apocalyptic number.

172001290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172001290 is a deficient number, since it is larger than the sum of its proper divisors (146192630).

172001290 is a wasteful number, since it uses less digits than its factorization.

172001290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 172001290 is about 13114.9262293007. The cubic root of 172001290 is about 556.1311669731.

The spelling of 172001290 in words is "one hundred seventy-two million, one thousand, two hundred ninety".