72930381 has 8 divisors (see below), whose sum is σ = 97940640. Its totient is φ = 48270192.

The previous prime is 72930373. The next prime is 72930421. The reversal of 72930381 is 18303927.

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

It is not a de Polignac number, because 72930381 - 2³ = 72930373 is a prime.

It is a super-4 number, since 4×72930381⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72930301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87030 + ... + 87863.

It is an arithmetic number, because the mean of its divisors is an integer number (12242580).

Almost surely, 2^72930381 is an apocalyptic number.

It is an amenable number.

72930381 is a deficient number, since it is larger than the sum of its proper divisors (25010259).

72930381 is a wasteful number, since it uses less digits than its factorization.

72930381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175035.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 72930381 is about 8539.9286296784. The cubic root of 72930381 is about 417.8010182867.

The spelling of 72930381 in words is "seventy-two million, nine hundred thirty thousand, three hundred eighty-one".