72061230 has 64 divisors (see below), whose sum is σ = 180740160. Its totient is φ = 18364416.

The previous prime is 72061217. The next prime is 72061261. The reversal of 72061230 is 3216027.

It is a happy number.

It is a super-2 number, since 2×72061230² = 10385641738225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72061197 and 72061206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97944 + ... + 98676.

It is an arithmetic number, because the mean of its divisors is an integer number (2824065).

Almost surely, 2^72061230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72061230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90370080).

72061230 is an abundant number, since it is smaller than the sum of its proper divisors (108678930).

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

72061230 is a wasteful number, since it uses less digits than its factorization.

72061230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 72061230 is about 8488.8886198371. Note that the first 3 decimals coincide. The cubic root of 72061230 is about 416.1346603933.

Adding to 72061230 its reverse (3216027), we get a palindrome (75277257).

The spelling of 72061230 in words is "seventy-two million, sixty-one thousand, two hundred thirty".