172438070 has 16 divisors (see below), whose sum is σ = 354729888. Its totient is φ = 59121600.

The previous prime is 172438069. The next prime is 172438073. The reversal of 172438070 is 70834271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172438073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231631 + ... + 1231770.

It is an arithmetic number, because the mean of its divisors is an integer number (22170618).

Almost surely, 2^172438070 is an apocalyptic number.

172438070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172438070 is an abundant number, since it is smaller than the sum of its proper divisors (182291818).

172438070 is a wasteful number, since it uses less digits than its factorization.

172438070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463415.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 172438070 is about 13131.5676901123. The cubic root of 172438070 is about 556.6015154766.

The spelling of 172438070 in words is "one hundred seventy-two million, four hundred thirty-eight thousand, seventy".