72403112 has 16 divisors (see below), whose sum is σ = 136014900. Its totient is φ = 36132480.

The previous prime is 72403109. The next prime is 72403139. The reversal of 72403112 is 21130427.

It can be written as a sum of positive squares in 2 ways, for example, as 72352036 + 51076 = 8506^2 + 226^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4037 + ... + 12692.

Almost surely, 2^72403112 is an apocalyptic number.

It is an amenable number.

72403112 is a deficient number, since it is larger than the sum of its proper divisors (63611788).

72403112 is a wasteful number, since it uses less digits than its factorization.

72403112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17276 (or 17272 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 72403112 is about 8509.0018216005. The cubic root of 72403112 is about 416.7917152848.

Adding to 72403112 its reverse (21130427), we get a palindrome (93533539).

The spelling of 72403112 in words is "seventy-two million, four hundred three thousand, one hundred twelve".