72012700 has 18 divisors (see below), whose sum is σ = 156267776. Its totient is φ = 28805040.

The previous prime is 72012667. The next prime is 72012719. The reversal of 72012700 is 721027.

It is a super-2 number, since 2×72012700² = 10371657922580000, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 359964 + ... + 360163.

Almost surely, 2^72012700 is an apocalyptic number.

It is an amenable number.

72012700 is an abundant number, since it is smaller than the sum of its proper divisors (84255076).

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

72012700 is a wasteful number, since it uses less digits than its factorization.

72012700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720141 (or 720134 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 72012700 is about 8486.0296959179. The cubic root of 72012700 is about 416.0412234173.

Adding to 72012700 its reverse (721027), we get a palindrome (72733727).

The spelling of 72012700 in words is "seventy-two million, twelve thousand, seven hundred".