30919442 has 8 divisors (see below), whose sum is σ = 47014716. Its totient is φ = 15247872.

The previous prime is 30919439. The next prime is 30919459. The reversal of 30919442 is 24491903.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30129121 + 790321 = 5489^2 + 889^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 30919399 and 30919408.

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, 105743 + ... + 106034.

Almost surely, 2^30919442 is an apocalyptic number.

30919442 is a deficient number, since it is larger than the sum of its proper divisors (16095274).

30919442 is a wasteful number, since it uses less digits than its factorization.

30919442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211852.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 30919442 is about 5560.5253348942. The cubic root of 30919442 is about 313.8657180704.

The spelling of 30919442 in words is "thirty million, nine hundred nineteen thousand, four hundred forty-two".