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21014412 = 2239411861
BaseRepresentation
bin101000000101…
…0011110001100
31110112122100120
41100022132030
520334430122
62030224540
7343422336
oct120123614
943478316
1021014412
1110953491
127055150
13447a083
142b10456
151ca175c
hex140a78c

21014412 has 24 divisors (see below), whose sum is σ = 49112112. Its totient is φ = 6993600.

The previous prime is 21014407. The next prime is 21014429. The reversal of 21014412 is 21441012.

It is a junction number, because it is equal to n+sod(n) for n = 21014391 and 21014400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10362 + ... + 12222.

It is an arithmetic number, because the mean of its divisors is an integer number (2046338).

Almost surely, 221014412 is an apocalyptic number.

It is an amenable number.

21014412 is an abundant number, since it is smaller than the sum of its proper divisors (28097700).

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

21014412 is a wasteful number, since it uses less digits than its factorization.

21014412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 21014412 is about 4584.1479033731. The cubic root of 21014412 is about 275.9555168806.

Adding to 21014412 its reverse (21441012), we get a palindrome (42455424).

The spelling of 21014412 in words is "twenty-one million, fourteen thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 941 1861 1882 2823 3722 3764 5583 5646 7444 11166 11292 22332 1751201 3502402 5253603 7004804 10507206 21014412