72999735 has 8 divisors (see below), whose sum is σ = 116799600. Its totient is φ = 38933184.

The previous prime is 72999679. The next prime is 72999739. The reversal of 72999735 is 53799927.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72999735 - 2⁶ = 72999671 is a prime.

It is a super-2 number, since 2×72999735² = 10657922620140450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72999739) 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, 2433310 + ... + 2433339.

It is an arithmetic number, because the mean of its divisors is an integer number (14599950).

Almost surely, 2^72999735 is an apocalyptic number.

72999735 is a deficient number, since it is larger than the sum of its proper divisors (43799865).

72999735 is a wasteful number, since it uses less digits than its factorization.

72999735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866657.

The product of its digits is 1071630, while the sum is 51.

The square root of 72999735 is about 8543.9882373515. The cubic root of 72999735 is about 417.9334139184.

The spelling of 72999735 in words is "seventy-two million, nine hundred ninety-nine thousand, seven hundred thirty-five".