30387434 has 32 divisors (see below), whose sum is σ = 58375296. Its totient is φ = 11517120.

The previous prime is 30387433. The next prime is 30387443. The reversal of 30387434 is 43478303.

It is a super-2 number, since 2×30387434² = 1846792290208712, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 30387434.

It is not an unprimeable number, because it can be changed into a prime (30387431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032 + ... + 8364.

It is an arithmetic number, because the mean of its divisors is an integer number (1824228).

Almost surely, 2^30387434 is an apocalyptic number.

30387434 is a deficient number, since it is larger than the sum of its proper divisors (27987862).

30387434 is a wasteful number, since it uses less digits than its factorization.

30387434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 30387434 is about 5512.4798412330. The cubic root of 30387434 is about 312.0551417441.

The spelling of 30387434 in words is "thirty million, three hundred eighty-seven thousand, four hundred thirty-four".