30642494 has 8 divisors (see below), whose sum is σ = 46437888. Its totient is φ = 15163200.

The previous prime is 30642487. The next prime is 30642499. The reversal of 30642494 is 49424603.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30642494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30642499) 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, 78782 + ... + 79169.

It is an arithmetic number, because the mean of its divisors is an integer number (5804736).

Almost surely, 2^30642494 is an apocalyptic number.

30642494 is a deficient number, since it is larger than the sum of its proper divisors (15795394).

30642494 is a wasteful number, since it uses less digits than its factorization.

30642494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158050.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 30642494 is about 5535.5662763623. The cubic root of 30642494 is about 312.9257990809.

The spelling of 30642494 in words is "thirty million, six hundred forty-two thousand, four hundred ninety-four".