30422978 has 8 divisors (see below), whose sum is σ = 45673740. Its totient is φ = 15198400.

The previous prime is 30422963. The next prime is 30422981. The reversal of 30422978 is 87922403.

It can be written as a sum of positive squares in 2 ways, for example, as 29408929 + 1014049 = 5423^2 + 1007^2 .

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

It is a Curzon number.

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, 3323 + ... + 8478.

Almost surely, 2^30422978 is an apocalyptic number.

30422978 is a deficient number, since it is larger than the sum of its proper divisors (15250762).

30422978 is a wasteful number, since it uses less digits than its factorization.

30422978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13092.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 30422978 is about 5515.7028563910. The cubic root of 30422978 is about 312.1767640145.

The spelling of 30422978 in words is "thirty million, four hundred twenty-two thousand, nine hundred seventy-eight".