72044740 has 24 divisors (see below), whose sum is σ = 157872960. Its totient is φ = 27564768.

The previous prime is 72044719. The next prime is 72044741. The reversal of 72044740 is 4744027.

It is a junction number, because it is equal to n+sod(n) for n = 72044699 and 72044708.

It is not an unprimeable number, because it can be changed into a prime (72044741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77850 + ... + 78769.

It is an arithmetic number, because the mean of its divisors is an integer number (6578040).

Almost surely, 2^72044740 is an apocalyptic number.

It is an amenable number.

72044740 is an abundant number, since it is smaller than the sum of its proper divisors (85828220).

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

72044740 is a wasteful number, since it uses less digits than its factorization.

72044740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156651 (or 156649 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 72044740 is about 8487.9172946018. The cubic root of 72044740 is about 416.1029161667.

Adding to 72044740 its reverse (4744027), we get a palindrome (76788767).

The spelling of 72044740 in words is "seventy-two million, forty-four thousand, seven hundred forty".