Search a number
-
+
22012460 = 2256118043
BaseRepresentation
bin101001111111…
…0001000101100
31112102100102022
41103332020230
521113344320
62103445312
7355050161
oct123761054
945370368
1022012460
1111475318
127456838
134739432
142cd0068
151dec325
hex14fe22c

22012460 has 24 divisors (see below), whose sum is σ = 46986576. Its totient is φ = 8660160.

The previous prime is 22012453. The next prime is 22012483. The reversal of 22012460 is 6421022.

It is an unprimeable number.

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, 7802 + ... + 10241.

It is an arithmetic number, because the mean of its divisors is an integer number (1957774).

Almost surely, 222012460 is an apocalyptic number.

22012460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012460 is an abundant number, since it is smaller than the sum of its proper divisors (24974116).

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

22012460 is a wasteful number, since it uses less digits than its factorization.

22012460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18113 (or 18111 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22012460 is about 4691.7438122728. The cubic root of 22012460 is about 280.2568221881.

Adding to 22012460 its reverse (6421022), we get a palindrome (28433482).

The spelling of 22012460 in words is "twenty-two million, twelve thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 18043 36086 72172 90215 180430 360860 1100623 2201246 4402492 5503115 11006230 22012460