72146330 has 8 divisors (see below), whose sum is σ = 129863412. Its totient is φ = 28858528.

The previous prime is 72146329. The next prime is 72146341. The reversal of 72146330 is 3364127.

It can be written as a sum of positive squares in 2 ways, for example, as 62267881 + 9878449 = 7891^2 + 3143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72146330.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3607307 + ... + 3607326.

Almost surely, 2^72146330 is an apocalyptic number.

72146330 is a deficient number, since it is larger than the sum of its proper divisors (57717082).

72146330 is a wasteful number, since it uses less digits than its factorization.

72146330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7214640.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 72146330 is about 8493.8995755778. The cubic root of 72146330 is about 416.2984059955.

The spelling of 72146330 in words is "seventy-two million, one hundred forty-six thousand, three hundred thirty".