72304302 has 48 divisors (see below), whose sum is σ = 168953472. Its totient is φ = 20568240.

The previous prime is 72304301. The next prime is 72304303. The reversal of 72304302 is 20340327.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72304301) and next prime (72304303).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72304301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96943 + ... + 97685.

It is an arithmetic number, because the mean of its divisors is an integer number (3519864).

Almost surely, 2^72304302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72304302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84476736).

72304302 is an abundant number, since it is smaller than the sum of its proper divisors (96649170).

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

72304302 is a wasteful number, since it uses less digits than its factorization.

72304302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 72304302 is about 8503.1936353349. The cubic root of 72304302 is about 416.6020275906.

Adding to 72304302 its reverse (20340327), we get a palindrome (92644629).

The spelling of 72304302 in words is "seventy-two million, three hundred four thousand, three hundred two".