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22420969 = 198913259
BaseRepresentation
bin101010110000…
…1110111101001
31120012002210021
41111201313221
521214432334
62120320441
7361401154
oct125416751
946162707
1022420969
111172422a
127613121
13485035c
142d98c9b
151e7d3b4
hex1561de9

22420969 has 8 divisors (see below), whose sum is σ = 23868000. Its totient is φ = 21000672.

The previous prime is 22420949. The next prime is 22420987. The reversal of 22420969 is 96902422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22420969 - 219 = 21896681 is a prime.

It is a super-2 number, since 2×224209692 = 1005399701797922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22420939) 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, 4939 + ... + 8320.

It is an arithmetic number, because the mean of its divisors is an integer number (2983500).

Almost surely, 222420969 is an apocalyptic number.

It is an amenable number.

22420969 is a deficient number, since it is larger than the sum of its proper divisors (1447031).

22420969 is a wasteful number, since it uses less digits than its factorization.

22420969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 22420969 is about 4735.0785632342. The cubic root of 22420969 is about 281.9798830443.

The spelling of 22420969 in words is "twenty-two million, four hundred twenty thousand, nine hundred sixty-nine".

Divisors: 1 19 89 1691 13259 251921 1180051 22420969