18290016 has 48 divisors (see below), whose sum is σ = 53348400. Its totient is φ = 6096384.

The previous prime is 18289993. The next prime is 18290017. The reversal of 18290016 is 61009281.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18290017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9721 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (1111425).

Almost surely, 2^18290016 is an apocalyptic number.

18290016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18290016 is an abundant number, since it is smaller than the sum of its proper divisors (35058384).

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

18290016 is a wasteful number, since it uses less digits than its factorization.

18290016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21188 (or 21174 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18290016 is about 4276.6828266777. The cubic root of 18290016 is about 263.4741599290.

Adding to 18290016 its reverse (61009281), we get a palindrome (79299297).

The spelling of 18290016 in words is "eighteen million, two hundred ninety thousand, sixteen".