72431226030 has 32 divisors (see below), whose sum is σ = 173854965888. Its totient is φ = 19312768800.

The previous prime is 72431225987. The next prime is 72431226157. The reversal of 72431226030 is 3062213427.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134565 + ... + 403695.

It is an arithmetic number, because the mean of its divisors is an integer number (5432967684).

Almost surely, 2^72431226030 is an apocalyptic number.

It is a pronic number, being equal to 269130×269131.

72431226030 is an abundant number, since it is smaller than the sum of its proper divisors (101423739858).

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

72431226030 is a wasteful number, since it uses less digits than its factorization.

72431226030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278112.

The product of its (nonzero) digits is 12096, while the sum is 30.

Adding to 72431226030 its reverse (3062213427), we get a palindrome (75493439457).

The spelling of 72431226030 in words is "seventy-two billion, four hundred thirty-one million, two hundred twenty-six thousand, thirty".