30864542 has 4 divisors (see below), whose sum is σ = 46296816. Its totient is φ = 15432270.

The previous prime is 30864541. The next prime is 30864553. The reversal of 30864542 is 24546803.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 30864499 and 30864508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30864541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7716134 + ... + 7716137.

It is an arithmetic number, because the mean of its divisors is an integer number (11574204).

Almost surely, 2^30864542 is an apocalyptic number.

30864542 is a deficient number, since it is larger than the sum of its proper divisors (15432274).

30864542 is a wasteful number, since it uses less digits than its factorization.

30864542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15432273.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 30864542 is about 5555.5865576913. The cubic root of 30864542 is about 313.6798432577.

The spelling of 30864542 in words is "thirty million, eight hundred sixty-four thousand, five hundred forty-two".