72243015 has 16 divisors (see below), whose sum is σ = 124480608. Its totient is φ = 35565696.

The previous prime is 72243011. The next prime is 72243029. The reversal of 72243015 is 51034227.

It is not a de Polignac number, because 72243015 - 2² = 72243011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72243011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185044 + ... + 185433.

It is an arithmetic number, because the mean of its divisors is an integer number (7780038).

Almost surely, 2^72243015 is an apocalyptic number.

72243015 is a deficient number, since it is larger than the sum of its proper divisors (52237593).

72243015 is a wasteful number, since it uses less digits than its factorization.

72243015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370498.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 72243015 is about 8499.5891077157. The cubic root of 72243015 is about 416.4842867596.

The spelling of 72243015 in words is "seventy-two million, two hundred forty-three thousand, fifteen".