72450132 has 12 divisors (see below), whose sum is σ = 169050336. Its totient is φ = 24150040.

The previous prime is 72450101. The next prime is 72450139. The reversal of 72450132 is 23105427.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72450139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018744 + ... + 3018767.

It is an arithmetic number, because the mean of its divisors is an integer number (14087528).

Almost surely, 2^72450132 is an apocalyptic number.

It is an amenable number.

72450132 is an abundant number, since it is smaller than the sum of its proper divisors (96600204).

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

72450132 is a wasteful number, since it uses less digits than its factorization.

72450132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037518 (or 6037516 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 72450132 is about 8511.7643294443. The cubic root of 72450132 is about 416.8819199970.

Adding to 72450132 its reverse (23105427), we get a palindrome (95555559).

The spelling of 72450132 in words is "seventy-two million, four hundred fifty thousand, one hundred thirty-two".