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22744069 = 71320339
BaseRepresentation
bin101011011000…
…0110000000101
31120210111222221
41112300300011
521310302234
62131252341
7364215145
oct126606005
946714887
1022744069
1111924a57
12774a0b1
13493443a
143040925
151ee3eb4
hex15b0c05

22744069 has 4 divisors (see below), whose sum is σ = 23064480. Its totient is φ = 22423660.

The previous prime is 22744061. The next prime is 22744097. The reversal of 22744069 is 96044722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96044722 = 248022361.

It is a cyclic number.

It is not a de Polignac number, because 22744069 - 23 = 22744061 is a prime.

It is a super-2 number, since 2×227440692 = 1034585349353522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22744061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160099 + ... + 160240.

It is an arithmetic number, because the mean of its divisors is an integer number (5766120).

Almost surely, 222744069 is an apocalyptic number.

It is an amenable number.

22744069 is a deficient number, since it is larger than the sum of its proper divisors (320411).

22744069 is an equidigital number, since it uses as much as digits as its factorization.

22744069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320410.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 22744069 is about 4769.0742288205. The cubic root of 22744069 is about 283.3279296163.

The spelling of 22744069 in words is "twenty-two million, seven hundred forty-four thousand, sixty-nine".

Divisors: 1 71 320339 22744069