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22969940 = 2257164071
BaseRepresentation
bin101011110011…
…1111001010100
31121012222211112
41113213321110
521340014230
62140154152
7366145520
oct127477124
947188745
1022969940
1111a69724
127838958
1349b31a6
14309cd80
15203ad95
hex15e7e54

22969940 has 24 divisors (see below), whose sum is σ = 55128192. Its totient is φ = 7875360.

The previous prime is 22969931. The next prime is 22969949. The reversal of 22969940 is 4996922.

It is an interprime number because it is at equal distance from previous prime (22969931) and next prime (22969949).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22969949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81896 + ... + 82175.

It is an arithmetic number, because the mean of its divisors is an integer number (2297008).

Almost surely, 222969940 is an apocalyptic number.

22969940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22969940 is an abundant number, since it is smaller than the sum of its proper divisors (32158252).

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

22969940 is a wasteful number, since it uses less digits than its factorization.

22969940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164087 (or 164085 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 22969940 is about 4792.6965270086. The cubic root of 22969940 is about 284.2627502882.

The spelling of 22969940 in words is "twenty-two million, nine hundred sixty-nine thousand, nine hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 164071 328142 656284 820355 1148497 1640710 2296994 3281420 4593988 5742485 11484970 22969940