173429990 has 16 divisors (see below), whose sum is σ = 312621120. Its totient is φ = 69272640.

The previous prime is 173429981. The next prime is 173430007. The reversal of 173429990 is 99924371.

173429990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×173429990² = 60155922862800200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4871 + ... + 19250.

It is an arithmetic number, because the mean of its divisors is an integer number (19538820).

Almost surely, 2^173429990 is an apocalyptic number.

173429990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

173429990 is a deficient number, since it is larger than the sum of its proper divisors (139191130).

173429990 is a wasteful number, since it uses less digits than its factorization.

173429990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24847.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 173429990 is about 13169.2820609174. The cubic root of 173429990 is about 557.6667267293. Note that the first 3 decimals are identical.

The spelling of 173429990 in words is "one hundred seventy-three million, four hundred twenty-nine thousand, nine hundred ninety".