18898464 has 96 divisors (see below), whose sum is σ = 56306880. Its totient is φ = 5501952.

The previous prime is 18898463. The next prime is 18898487. The reversal of 18898464 is 46489881.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (18898463) 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, 23314 + ... + 24110.

It is an arithmetic number, because the mean of its divisors is an integer number (586530).

Almost surely, 2^18898464 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 18898464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28153440).

18898464 is an abundant number, since it is smaller than the sum of its proper divisors (37408416).

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

18898464 is a wasteful number, since it uses less digits than its factorization.

18898464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 834 counting only the distinct ones).

The product of its digits is 442368, while the sum is 48.

The square root of 18898464 is about 4347.2363634843. The cubic root of 18898464 is about 266.3639843456.

The spelling of 18898464 in words is "eighteen million, eight hundred ninety-eight thousand, four hundred sixty-four".