30749542 has 8 divisors (see below), whose sum is σ = 46156032. Its totient is φ = 15364200.

The previous prime is 30749531. The next prime is 30749567. The reversal of 30749542 is 24594703.

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 = 30749498 and 30749507.

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, 934 + ... + 7897.

It is an arithmetic number, because the mean of its divisors is an integer number (5769504).

Almost surely, 2^30749542 is an apocalyptic number.

30749542 is a deficient number, since it is larger than the sum of its proper divisors (15406490).

30749542 is a wasteful number, since it uses less digits than its factorization.

30749542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10574.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 30749542 is about 5545.2269565817. The cubic root of 30749542 is about 313.2897723759.

The spelling of 30749542 in words is "thirty million, seven hundred forty-nine thousand, five hundred forty-two".