30822920 has 16 divisors (see below), whose sum is σ = 69351660. Its totient is φ = 12329152.

The previous prime is 30822917. The next prime is 30822923. The reversal of 30822920 is 2922803.

It is an interprime number because it is at equal distance from previous prime (30822917) and next prime (30822923).

It can be written as a sum of positive squares in 2 ways, for example, as 28494244 + 2328676 = 5338^2 + 1526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30822920.

It is not an unprimeable number, because it can be changed into a prime (30822923) 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, 385247 + ... + 385326.

Almost surely, 2^30822920 is an apocalyptic number.

It is an amenable number.

30822920 is an abundant number, since it is smaller than the sum of its proper divisors (38528740).

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

30822920 is a wasteful number, since it uses less digits than its factorization.

30822920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770584 (or 770580 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30822920 is about 5551.8393348511. The cubic root of 30822920 is about 313.5387767909.

The spelling of 30822920 in words is "thirty million, eight hundred twenty-two thousand, nine hundred twenty".