30722380 has 24 divisors (see below), whose sum is σ = 69480432. Its totient is φ = 11343552.

The previous prime is 30722369. The next prime is 30722399. The reversal of 30722380 is 8322703.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58822 + ... + 59341.

It is an arithmetic number, because the mean of its divisors is an integer number (2895018).

Almost surely, 2^30722380 is an apocalyptic number.

It is an amenable number.

30722380 is an abundant number, since it is smaller than the sum of its proper divisors (38758052).

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

30722380 is a wasteful number, since it uses less digits than its factorization.

30722380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118185 (or 118183 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 30722380 is about 5542.7772821935. Note that the first 3 decimals coincide. The cubic root of 30722380 is about 313.1974990924.

The spelling of 30722380 in words is "thirty million, seven hundred twenty-two thousand, three hundred eighty".