18074484 has 36 divisors (see below), whose sum is σ = 46555236. Its totient is φ = 5910528.

The previous prime is 18074467. The next prime is 18074501. The reversal of 18074484 is 48447081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18074467) and next prime (18074501).

It can be written as a sum of positive squares in 2 ways, for example, as 15824484 + 2250000 = 3978^2 + 1500^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2829 + ... + 6644.

It is an arithmetic number, because the mean of its divisors is an integer number (1293201).

Almost surely, 2^18074484 is an apocalyptic number.

It is an amenable number.

18074484 is an abundant number, since it is smaller than the sum of its proper divisors (28480752).

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

18074484 is a wasteful number, since it uses less digits than its factorization.

18074484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536 (or 9531 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 18074484 is about 4251.4096485754. The cubic root of 18074484 is about 262.4351295484.

The spelling of 18074484 in words is "eighteen million, seventy-four thousand, four hundred eighty-four".