172041408 has 280 divisors, whose sum is σ = 637300224. Its totient is φ = 44582400.

The previous prime is 172041391. The next prime is 172041421. The reversal of 172041408 is 804140271.

172041408 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 398953 + ... + 399383.

Almost surely, 2^172041408 is an apocalyptic number.

172041408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172041408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318650112).

172041408 is an abundant number, since it is smaller than the sum of its proper divisors (465258816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172041408 is a wasteful number, since it uses less digits than its factorization.

172041408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 172041408 is about 13116.4556188019. The cubic root of 172041408 is about 556.1744014081.

Adding to 172041408 its reverse (804140271), we get a palindrome (976181679).

The spelling of 172041408 in words is "one hundred seventy-two million, forty-one thousand, four hundred eight".