30643742 has 8 divisors (see below), whose sum is σ = 46613232. Its totient is φ = 15106000.

The previous prime is 30643729. The next prime is 30643759. The reversal of 30643742 is 24734603.

It is a happy number.

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

It is a congruent 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, 107759 + ... + 108042.

It is an arithmetic number, because the mean of its divisors is an integer number (5826654).

Almost surely, 2^30643742 is an apocalyptic number.

30643742 is a deficient number, since it is larger than the sum of its proper divisors (15969490).

30643742 is a wasteful number, since it uses less digits than its factorization.

30643742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215874.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 30643742 is about 5535.6790008092. The cubic root of 30643742 is about 312.9300472784.

The spelling of 30643742 in words is "thirty million, six hundred forty-three thousand, seven hundred forty-two".