172530040 has 16 divisors (see below), whose sum is σ = 388192680. Its totient is φ = 69012000.

The previous prime is 172530023. The next prime is 172530053. The reversal of 172530040 is 40035271.

It is a super-2 number, since 2×172530040² = 59533229404803200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172529993 and 172530020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156586 + ... + 2156665.

Almost surely, 2^172530040 is an apocalyptic number.

172530040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172530040 is an abundant number, since it is smaller than the sum of its proper divisors (215662640).

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

172530040 is a wasteful number, since it uses less digits than its factorization.

172530040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313262 (or 4313258 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 172530040 is about 13135.0690900353. The cubic root of 172530040 is about 556.7004525292.

The spelling of 172530040 in words is "one hundred seventy-two million, five hundred thirty thousand, forty".