72174130 has 32 divisors (see below), whose sum is σ = 148832640. Its totient is φ = 24685440.

The previous prime is 72174119. The next prime is 72174133. The reversal of 72174130 is 3147127.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72174095 and 72174104.

It is not an unprimeable number, because it can be changed into a prime (72174133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35481 + ... + 37459.

It is an arithmetic number, because the mean of its divisors is an integer number (4651020).

Almost surely, 2^72174130 is an apocalyptic number.

72174130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72174130 is an abundant number, since it is smaller than the sum of its proper divisors (76658510).

72174130 is a wasteful number, since it uses less digits than its factorization.

72174130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 72174130 is about 8495.5358865701. The cubic root of 72174130 is about 416.3518696044.

Subtracting from 72174130 its sum of digits (25), we obtain a triangular number (72174105 = T₁₂₀₁₄).

The spelling of 72174130 in words is "seventy-two million, one hundred seventy-four thousand, one hundred thirty".