172435490 has 32 divisors (see below), whose sum is σ = 316483200. Its totient is φ = 67630464.

The previous prime is 172435489. The next prime is 172435511. The reversal of 172435490 is 94534271.

It is a self number, because there is not a number n which added to its sum of digits gives 172435490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144677 + ... + 145863.

It is an arithmetic number, because the mean of its divisors is an integer number (9890100).

Almost surely, 2^172435490 is an apocalyptic number.

172435490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172435490 is a deficient number, since it is larger than the sum of its proper divisors (144047710).

172435490 is a wasteful number, since it uses less digits than its factorization.

172435490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 172435490 is about 13131.4694531876. The cubic root of 172435490 is about 556.5987395253.

The spelling of 172435490 in words is "one hundred seventy-two million, four hundred thirty-five thousand, four hundred ninety".