72449140 has 24 divisors (see below), whose sum is σ = 152716032. Its totient is φ = 28870560.

The previous prime is 72449101. The next prime is 72449183. The reversal of 72449140 is 4194427.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264 + ... + 12103.

It is an arithmetic number, because the mean of its divisors is an integer number (6363168).

Almost surely, 2^72449140 is an apocalyptic number.

It is an amenable number.

72449140 is an abundant number, since it is smaller than the sum of its proper divisors (80266892).

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

72449140 is a wasteful number, since it uses less digits than its factorization.

72449140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13647 (or 13645 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 72449140 is about 8511.7060569547. The cubic root of 72449140 is about 416.8800173147.

It can be divided in two parts, 7244 and 9140, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 72449140 in words is "seventy-two million, four hundred forty-nine thousand, one hundred forty".