72730270 has 16 divisors (see below), whose sum is σ = 132759648. Its totient is φ = 28682080.

The previous prime is 72730253. The next prime is 72730277. The reversal of 72730270 is 7203727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72730277) 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, 50509 + ... + 51928.

It is an arithmetic number, because the mean of its divisors is an integer number (8297478).

Almost surely, 2^72730270 is an apocalyptic number.

72730270 is a deficient number, since it is larger than the sum of its proper divisors (60029378).

72730270 is a wasteful number, since it uses less digits than its factorization.

72730270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102515.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 72730270 is about 8528.2043831043. The cubic root of 72730270 is about 417.4185386143.

Adding to 72730270 its reverse (7203727), we get a palindrome (79933997).

The spelling of 72730270 in words is "seventy-two million, seven hundred thirty thousand, two hundred seventy".