18334740 has 48 divisors (see below), whose sum is σ = 51528960. Its totient is φ = 4871040.

The previous prime is 18334711. The next prime is 18334741. The reversal of 18334740 is 4743381.

18334740 is nontrivially palindromic in base 9.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 18334698 and 18334707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18334741) 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, 25506 + ... + 26214.

It is an arithmetic number, because the mean of its divisors is an integer number (1073520).

Almost surely, 2^18334740 is an apocalyptic number.

18334740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18334740 is an abundant number, since it is smaller than the sum of its proper divisors (33194220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18334740 is a wasteful number, since it uses less digits than its factorization.

18334740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 18334740 is about 4281.9084530148. The cubic root of 18334740 is about 263.6887401432.

The spelling of 18334740 in words is "eighteen million, three hundred thirty-four thousand, seven hundred forty".