72990029 has 8 divisors (see below), whose sum is σ = 83552448. Its totient is φ = 62461440.

The previous prime is 72990019. The next prime is 72990037. The reversal of 72990029 is 92009927.

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

It is a cyclic number.

It is not a de Polignac number, because 72990029 - 2²⁴ = 56212813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72989974 and 72990001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72990019) 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, 3647 + ... + 12620.

It is an arithmetic number, because the mean of its divisors is an integer number (10444056).

Almost surely, 2^72990029 is an apocalyptic number.

It is an amenable number.

72990029 is a deficient number, since it is larger than the sum of its proper divisors (10562419).

72990029 is a wasteful number, since it uses less digits than its factorization.

72990029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16915.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 72990029 is about 8543.4202167516. The cubic root of 72990029 is about 417.9148903739.

The spelling of 72990029 in words is "seventy-two million, nine hundred ninety thousand, twenty-nine".