18260448 has 96 divisors (see below), whose sum is σ = 51819264. Its totient is φ = 5609472.

The previous prime is 18260447. The next prime is 18260449. The reversal of 18260448 is 84406281.

It is an interprime number because it is at equal distance from previous prime (18260447) and next prime (18260449).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×18260448² = 666887922321408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18260447) 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, 109261 + ... + 109427.

It is an arithmetic number, because the mean of its divisors is an integer number (539784).

Almost surely, 2^18260448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18260448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25909632).

18260448 is an abundant number, since it is smaller than the sum of its proper divisors (33558816).

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

18260448 is a wasteful number, since it uses less digits than its factorization.

18260448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 18260448 is about 4273.2245435970. The cubic root of 18260448 is about 263.3321041798.

The spelling of 18260448 in words is "eighteen million, two hundred sixty thousand, four hundred forty-eight".