72401252 has 24 divisors (see below), whose sum is σ = 157967040. Its totient is φ = 28208160.

The previous prime is 72401239. The next prime is 72401257. The reversal of 72401252 is 25210427.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72401257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117227 + ... + 117842.

It is an arithmetic number, because the mean of its divisors is an integer number (6581960).

Almost surely, 2^72401252 is an apocalyptic number.

It is an amenable number.

72401252 is an abundant number, since it is smaller than the sum of its proper divisors (85565788).

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

72401252 is a wasteful number, since it uses less digits than its factorization.

72401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235091 (or 235089 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 72401252 is about 8508.8925248824. The cubic root of 72401252 is about 416.7881461969.

Adding to 72401252 its reverse (25210427), we get a palindrome (97611679).

The spelling of 72401252 in words is "seventy-two million, four hundred one thousand, two hundred fifty-two".