18248477 has 8 divisors (see below), whose sum is σ = 19786200. Its totient is φ = 16729920.

The previous prime is 18248473. The next prime is 18248479. The reversal of 18248477 is 77484281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 219961 + 18028516 = 469^2 + 4246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18248477 - 2² = 18248473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18248473) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2774 + ... + 6647.

It is an arithmetic number, because the mean of its divisors is an integer number (2473275).

Almost surely, 2^18248477 is an apocalyptic number.

It is an amenable number.

18248477 is a deficient number, since it is larger than the sum of its proper divisors (1537723).

18248477 is a wasteful number, since it uses less digits than its factorization.

18248477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9583.

The product of its digits is 100352, while the sum is 41.

The square root of 18248477 is about 4271.8236152725. The cubic root of 18248477 is about 263.2745474004.

It can be divided in two parts, 1824 and 8477, that added together give a palindrome (10301).

The spelling of 18248477 in words is "eighteen million, two hundred forty-eight thousand, four hundred seventy-seven".