18340276 has 6 divisors (see below), whose sum is σ = 32095490. Its totient is φ = 9170136.

The previous prime is 18340253. The next prime is 18340277. The reversal of 18340276 is 67204381.

It can be written as a sum of positive squares in only one way, i.e., 16208676 + 2131600 = 4026^2 + 1460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2292531 + ... + 2292538.

Almost surely, 2^18340276 is an apocalyptic number.

It is an amenable number.

18340276 is a deficient number, since it is larger than the sum of its proper divisors (13755214).

18340276 is a wasteful number, since it uses less digits than its factorization.

18340276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585073 (or 4585071 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 18340276 is about 4282.5548449494. The cubic root of 18340276 is about 263.7152769065.

The spelling of 18340276 in words is "eighteen million, three hundred forty thousand, two hundred seventy-six".