18672087 has 24 divisors (see below), whose sum is σ = 29752176. Its totient is φ = 10378368.

The previous prime is 18672053. The next prime is 18672107. The reversal of 18672087 is 78027681.

It is not a de Polignac number, because 18672087 - 2¹⁵ = 18639319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3723 + ... + 7155.

It is an arithmetic number, because the mean of its divisors is an integer number (1239674).

Almost surely, 2^18672087 is an apocalyptic number.

18672087 is a deficient number, since it is larger than the sum of its proper divisors (11080089).

18672087 is a wasteful number, since it uses less digits than its factorization.

18672087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487 (or 3480 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 18672087 is about 4321.1210351019. The cubic root of 18672087 is about 265.2961540135.

The spelling of 18672087 in words is "eighteen million, six hundred seventy-two thousand, eighty-seven".