72345532 has 12 divisors (see below), whose sum is σ = 144691120. Its totient is φ = 31005216.

The previous prime is 72345529. The next prime is 72345541. The reversal of 72345532 is 23554327.

72345532 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 72345494 and 72345503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291857 + ... + 1291912.

Almost surely, 2^72345532 is an apocalyptic number.

It is an amenable number.

72345532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72345532 is a wasteful number, since it uses less digits than its factorization.

72345532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583780 (or 2583778 counting only the distinct ones).

The product of its digits is 25200, while the sum is 31.

The square root of 72345532 is about 8505.6176730441. The cubic root of 72345532 is about 416.6811987109.

Adding to 72345532 its reverse (23554327), we get a palindrome (95899859).

The spelling of 72345532 in words is "seventy-two million, three hundred forty-five thousand, five hundred thirty-two".