171244020 has 24 divisors (see below), whose sum is σ = 479483424. Its totient is φ = 45665056.

The previous prime is 171244001. The next prime is 171244037. The reversal of 171244020 is 20442171.

It is a happy number.

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, 1426974 + ... + 1427093.

It is an arithmetic number, because the mean of its divisors is an integer number (19978476).

Almost surely, 2^171244020 is an apocalyptic number.

171244020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171244020 is an abundant number, since it is smaller than the sum of its proper divisors (308239404).

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

171244020 is a wasteful number, since it uses less digits than its factorization.

171244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854079 (or 2854077 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 171244020 is about 13086.0238422525. The cubic root of 171244020 is about 555.3138067892.

Adding to 171244020 its reverse (20442171), we get a palindrome (191686191).

The spelling of 171244020 in words is "one hundred seventy-one million, two hundred forty-four thousand, twenty".