72261070 has 32 divisors (see below), whose sum is σ = 152114688. Its totient is φ = 24198048.

The previous prime is 72261019. The next prime is 72261071. The reversal of 72261070 is 7016227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72261071) 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, 8994 + ... + 15013.

It is an arithmetic number, because the mean of its divisors is an integer number (4753584).

Almost surely, 2^72261070 is an apocalyptic number.

72261070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72261070 is an abundant number, since it is smaller than the sum of its proper divisors (79853618).

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

72261070 is a wasteful number, since it uses less digits than its factorization.

72261070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24064.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 72261070 is about 8500.6511515295. The cubic root of 72261070 is about 416.5189798366.

Adding to 72261070 its reverse (7016227), we get a palindrome (79277297).

The spelling of 72261070 in words is "seventy-two million, two hundred sixty-one thousand, seventy".