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22696381 = 36761843
BaseRepresentation
bin101011010010…
…1000110111101
31120201002120201
41112211012331
521302241011
62130243501
7363626131
oct126450675
946632521
1022696381
11118a2144
127726591
134918816
14302b3c1
151ed4cc1
hex15a51bd

22696381 has 4 divisors (see below), whose sum is σ = 22758592. Its totient is φ = 22634172.

The previous prime is 22696369. The next prime is 22696397. The reversal of 22696381 is 18369622.

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.

It is a cyclic number.

It is not a de Polignac number, because 22696381 - 223 = 14307773 is a prime.

It is a super-2 number, since 2×226963812 = 1030251420994322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22696381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22696361) 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, 30555 + ... + 31288.

It is an arithmetic number, because the mean of its divisors is an integer number (5689648).

Almost surely, 222696381 is an apocalyptic number.

It is an amenable number.

22696381 is a deficient number, since it is larger than the sum of its proper divisors (62211).

22696381 is an equidigital number, since it uses as much as digits as its factorization.

22696381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62210.

The product of its digits is 31104, while the sum is 37.

The square root of 22696381 is about 4764.0718928245. The cubic root of 22696381 is about 283.1297710472.

The spelling of 22696381 in words is "twenty-two million, six hundred ninety-six thousand, three hundred eighty-one".

Divisors: 1 367 61843 22696381