172770240 has 56 divisors (see below), whose sum is σ = 548548560. Its totient is φ = 46071808.

The previous prime is 172770233. The next prime is 172770251. The reversal of 172770240 is 42077271.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 172770198 and 172770207.

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, 89025 + ... + 90944.

It is an arithmetic number, because the mean of its divisors is an integer number (9795510).

Almost surely, 2^172770240 is an apocalyptic number.

172770240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172770240 is an abundant number, since it is smaller than the sum of its proper divisors (375778320).

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

172770240 is a wasteful number, since it uses less digits than its factorization.

172770240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179989 (or 179979 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 172770240 is about 13144.2093714304. The cubic root of 172770240 is about 556.9586828080.

The spelling of 172770240 in words is "one hundred seventy-two million, seven hundred seventy thousand, two hundred forty".