72205510 has 128 divisors (see below), whose sum is σ = 162570240. Its totient is φ = 22809600.

The previous prime is 72205501. The next prime is 72205513. The reversal of 72205510 is 1550227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72205513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1761090 + ... + 1761130.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^72205510 is an apocalyptic number.

72205510 is an abundant number, since it is smaller than the sum of its proper divisors (90364730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72205510 is a wasteful number, since it uses less digits than its factorization.

72205510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 72205510 is about 8497.3825381702. The cubic root of 72205510 is about 416.4122016035.

Adding to 72205510 its reverse (1550227), we get a palindrome (73755737).

The spelling of 72205510 in words is "seventy-two million, two hundred five thousand, five hundred ten".