Search a number
18160416 = 253321019
BaseRepresentation
bin100010101000…
…1101100100000
31021011122102000
41011101230200
514122113131
61445124000
7310234551
oct105215440
937148360
1018160416
11a28420a
1260b9600
1339bb011
1425aa328
1518dace6
hex1151b20

18160416 has 48 divisors (see below), whose sum is σ = 52970400. Its totient is φ = 6053184.

The previous prime is 18160411. The next prime is 18160421. The reversal of 18160416 is 61406181.

It is an interprime number because it is at equal distance from previous prime (18160411) and next prime (18160421).

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 self number, because there is not a number n which added to its sum of digits gives 18160416.

It is not an unprimeable number, because it can be changed into a prime (18160411) 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, 9646 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (1103550).

Almost surely, 218160416 is an apocalyptic number.

18160416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18160416 is an abundant number, since it is smaller than the sum of its proper divisors (34809984).

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

18160416 is a wasteful number, since it uses less digits than its factorization.

18160416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21038 (or 21024 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18160416 is about 4261.5039598714. The cubic root of 18160416 is about 262.8503729465.

Adding to 18160416 its reverse (61406181), we get a palindrome (79566597).

The spelling of 18160416 in words is "eighteen million, one hundred sixty thousand, four hundred sixteen".