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21414030 = 2351164891
BaseRepresentation
bin101000110110…
…0000010001110
31111021221112020
41101230002032
520440222110
62042551010
7350005401
oct121540216
944257466
1021414030
11110a6750
127208466
134589c31
142bb5d38
151d2ed70
hex146c08e

21414030 has 32 divisors (see below), whose sum is σ = 56066688. Its totient is φ = 5191200.

The previous prime is 21413993. The next prime is 21414037. The reversal of 21414030 is 3041412.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414037) 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, 32116 + ... + 32775.

It is an arithmetic number, because the mean of its divisors is an integer number (1752084).

Almost surely, 221414030 is an apocalyptic number.

21414030 is an abundant number, since it is smaller than the sum of its proper divisors (34652658).

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

21414030 is a wasteful number, since it uses less digits than its factorization.

21414030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64912.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21414030 is about 4627.5295785116. The cubic root of 21414030 is about 277.6937693811.

Adding to 21414030 its reverse (3041412), we get a palindrome (24455442).

The spelling of 21414030 in words is "twenty-one million, four hundred fourteen thousand, thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 64891 129782 194673 324455 389346 648910 713801 973365 1427602 1946730 2141403 3569005 4282806 7138010 10707015 21414030