72394746240 has 128 divisors (see below), whose sum is σ = 238715618400. Its totient is φ = 18639552512.

The previous prime is 72394746239. The next prime is 72394746241. The reversal of 72394746240 is 4264749327.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72394746239) and next prime (72394746241).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 72394746240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72394746241) 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, 594417 + ... + 705776.

Almost surely, 2^72394746240 is an apocalyptic number.

It is an amenable number.

72394746240 is an abundant number, since it is smaller than the sum of its proper divisors (166320872160).

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

72394746240 is a wasteful number, since it uses less digits than its factorization.

72394746240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300244 (or 1300232 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 72394746240 in words is "seventy-two billion, three hundred ninety-four million, seven hundred forty-six thousand, two hundred forty".