72646460 has 12 divisors (see below), whose sum is σ = 152557608. Its totient is φ = 29058576.

The previous prime is 72646439. The next prime is 72646463. The reversal of 72646460 is 6464627.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72646460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72646463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816142 + ... + 1816181.

It is an arithmetic number, because the mean of its divisors is an integer number (12713134).

Almost surely, 2^72646460 is an apocalyptic number.

It is an amenable number.

72646460 is an abundant number, since it is smaller than the sum of its proper divisors (79911148).

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

72646460 is a wasteful number, since it uses less digits than its factorization.

72646460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632332 (or 3632330 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 72646460 is about 8523.2892711676. The cubic root of 72646460 is about 417.2581409601.

The spelling of 72646460 in words is "seventy-two million, six hundred forty-six thousand, four hundred sixty".