30872242 has 8 divisors (see below), whose sum is σ = 46333296. Its totient is φ = 15427812.

The previous prime is 30872201. The next prime is 30872251. The reversal of 30872242 is 24227803.

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

It is a super-2 number, since 2×30872242² = 1906190652213128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30872242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2853 + ... + 8359.

It is an arithmetic number, because the mean of its divisors is an integer number (5791662).

Almost surely, 2^30872242 is an apocalyptic number.

30872242 is a deficient number, since it is larger than the sum of its proper divisors (15461054).

30872242 is a wasteful number, since it uses less digits than its factorization.

30872242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 30872242 is about 5556.2795106078. The cubic root of 30872242 is about 313.7059264134.

It can be divided in two parts, 3087 and 2242, that added together give a square (5329 = 73²).

The spelling of 30872242 in words is "thirty million, eight hundred seventy-two thousand, two hundred forty-two".