72290015 has 8 divisors (see below), whose sum is σ = 99140640. Its totient is φ = 49570272.

The previous prime is 72289993. The next prime is 72290017. The reversal of 72290015 is 51009227.

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 72290015 - 2⁶ = 72289951 is a prime.

It is a super-3 number, since 3×72290015³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72290017) 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, 1032680 + ... + 1032749.

It is an arithmetic number, because the mean of its divisors is an integer number (12392580).

Almost surely, 2^72290015 is an apocalyptic number.

72290015 is a deficient number, since it is larger than the sum of its proper divisors (26850625).

72290015 is a wasteful number, since it uses less digits than its factorization.

72290015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065441.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 72290015 is about 8502.3534977087. The cubic root of 72290015 is about 416.5745862301.

The spelling of 72290015 in words is "seventy-two million, two hundred ninety thousand, fifteen".