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22379897 = 238871097
BaseRepresentation
bin101010101011…
…1110101111001
31120010000110002
41111113311321
521212124042
62115402345
7361140341
oct125276571
946100402
1022379897
11116a6391
1275b33b5
134837757
142d87d21
151e71132
hex1557d79

22379897 has 8 divisors (see below), whose sum is σ = 23400576. Its totient is φ = 21363232.

The previous prime is 22379893. The next prime is 22379927. The reversal of 22379897 is 79897322.

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 22379897 - 22 = 22379893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22379893) 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, 19853 + ... + 20949.

It is an arithmetic number, because the mean of its divisors is an integer number (2925072).

Almost surely, 222379897 is an apocalyptic number.

It is an amenable number.

22379897 is a deficient number, since it is larger than the sum of its proper divisors (1020679).

22379897 is a wasteful number, since it uses less digits than its factorization.

22379897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007.

The product of its digits is 381024, while the sum is 47.

The square root of 22379897 is about 4730.7395827714. The cubic root of 22379897 is about 281.8075955630.

The spelling of 22379897 in words is "twenty-two million, three hundred seventy-nine thousand, eight hundred ninety-seven".

Divisors: 1 23 887 1097 20401 25231 973039 22379897