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22044420 = 2233540823
BaseRepresentation
bin101010000010…
…1111100000100
31112110222021000
41110011330010
521120410140
62104253300
7355242306
oct124057404
945428230
1022044420
1111497332
127471230
13474ab48
142cdb976
151e06a30
hex1505f04

22044420 has 48 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 5878368.

The previous prime is 22044413. The next prime is 22044433. The reversal of 22044420 is 2444022.

22044420 is a `hidden beast` number, since 220 + 4 + 442 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22044393 and 22044402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19872 + ... + 20951.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 222044420 is an apocalyptic number.

22044420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22044420 is an abundant number, since it is smaller than the sum of its proper divisors (46539900).

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

22044420 is a wasteful number, since it uses less digits than its factorization.

22044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40841 (or 40833 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 22044420 is about 4695.1485599499. The cubic root of 22044420 is about 280.3923920218.

Adding to 22044420 its reverse (2444022), we get a palindrome (24488442).

The spelling of 22044420 in words is "twenty-two million, forty-four thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 40823 81646 122469 163292 204115 244938 367407 408230 489876 612345 734814 816460 1102221 1224690 1469628 1837035 2204442 2449380 3674070 4408884 5511105 7348140 11022210 22044420