72230400000 has 1248 divisors, whose sum is σ = 307142841600. Its totient is φ = 16588800000.

The previous prime is 72230399971. The next prime is 72230400029. The reversal of 72230400000 is 403227.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72230399971) and next prime (72230400029).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3801599991 + ... + 3801600009.

Almost surely, 2^72230400000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72230400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153571420800).

72230400000 is an abundant number, since it is smaller than the sum of its proper divisors (234912441600).

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

72230400000 is an equidigital number, since it uses as much as digits as its factorization.

72230400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

Adding to 72230400000 its reverse (403227), we get a palindrome (72230803227).

The spelling of 72230400000 in words is "seventy-two billion, two hundred thirty million, four hundred thousand".