30478442 has 8 divisors (see below), whose sum is σ = 45948000. Its totient is φ = 15162444.

The previous prime is 30478429. The next prime is 30478493. The reversal of 30478442 is 24487403.

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 = 30478399 and 30478408.

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, 37892 + ... + 38687.

It is an arithmetic number, because the mean of its divisors is an integer number (5743500).

Almost surely, 2^30478442 is an apocalyptic number.

30478442 is a deficient number, since it is larger than the sum of its proper divisors (15469558).

30478442 is a wasteful number, since it uses less digits than its factorization.

30478442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76780.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 30478442 is about 5520.7283939712. The cubic root of 30478442 is about 312.3663582157.

The spelling of 30478442 in words is "thirty million, four hundred seventy-eight thousand, four hundred forty-two".