72611370 has 128 divisors (see below), whose sum is σ = 211438080. Its totient is φ = 17625600.

The previous prime is 72611351. The next prime is 72611417. The reversal of 72611370 is 7311627.

It is a super-2 number, since 2×72611370² = 10544822106553800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480795 + ... + 480945.

It is an arithmetic number, because the mean of its divisors is an integer number (1651860).

Almost surely, 2^72611370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72611370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105719040).

72611370 is an abundant number, since it is smaller than the sum of its proper divisors (138826710).

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

72611370 is a wasteful number, since it uses less digits than its factorization.

72611370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 72611370 is about 8521.2305449389. The cubic root of 72611370 is about 417.1909482104.

Adding to 72611370 its reverse (7311627), we get a palindrome (79922997).

The spelling of 72611370 in words is "seventy-two million, six hundred eleven thousand, three hundred seventy".