72061724 has 12 divisors (see below), whose sum is σ = 144123504. Its totient is φ = 30883584.

The previous prime is 72061697. The next prime is 72061729. The reversal of 72061724 is 42716027.

72061724 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72061729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286789 + ... + 1286844.

It is an arithmetic number, because the mean of its divisors is an integer number (12010292).

Almost surely, 2^72061724 is an apocalyptic number.

It is an amenable number.

72061724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72061724 is a wasteful number, since it uses less digits than its factorization.

72061724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573644 (or 2573642 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 72061724 is about 8488.9177166468. The cubic root of 72061724 is about 416.1356112978.

The spelling of 72061724 in words is "seventy-two million, sixty-one thousand, seven hundred twenty-four".