18434828 has 6 divisors (see below), whose sum is σ = 32260956. Its totient is φ = 9217412.

The previous prime is 18434827. The next prime is 18434833. The reversal of 18434828 is 82843481.

It is a junction number, because it is equal to n+sod(n) for n = 18434791 and 18434800.

It is not an unprimeable number, because it can be changed into a prime (18434821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2304350 + ... + 2304357.

It is an arithmetic number, because the mean of its divisors is an integer number (5376826).

Almost surely, 2^18434828 is an apocalyptic number.

It is an amenable number.

18434828 is a deficient number, since it is larger than the sum of its proper divisors (13826128).

18434828 is a wasteful number, since it uses less digits than its factorization.

18434828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608711 (or 4608709 counting only the distinct ones).

The product of its digits is 49152, while the sum is 38.

The square root of 18434828 is about 4293.5798583466. The cubic root of 18434828 is about 264.1676888420.

The spelling of 18434828 in words is "eighteen million, four hundred thirty-four thousand, eight hundred twenty-eight".