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22941397 = 211108727
BaseRepresentation
bin101011110000…
…0111011010101
31121011112200101
41113200323111
521333111042
62135414101
7365666353
oct127407325
947145611
1022941397
1111a4a236
127824331
1349a31bb
1430927d3
1520326b7
hex15e0ed5

22941397 has 4 divisors (see below), whose sum is σ = 23050336. Its totient is φ = 22832460.

The previous prime is 22941377. The next prime is 22941409. The reversal of 22941397 is 79314922.

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: 79314922 = 239657461.

It is a cyclic number.

It is not a de Polignac number, because 22941397 - 215 = 22908629 is a prime.

It is a super-3 number, since 3×229413973 (a number of 23 digits) contains 333 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 (22941337) 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, 54153 + ... + 54574.

It is an arithmetic number, because the mean of its divisors is an integer number (5762584).

Almost surely, 222941397 is an apocalyptic number.

It is an amenable number.

22941397 is a deficient number, since it is larger than the sum of its proper divisors (108939).

22941397 is a wasteful number, since it uses less digits than its factorization.

22941397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108938.

The product of its digits is 27216, while the sum is 37.

The square root of 22941397 is about 4789.7178413765. The cubic root of 22941397 is about 284.1449575735.

The spelling of 22941397 in words is "twenty-two million, nine hundred forty-one thousand, three hundred ninety-seven".

Divisors: 1 211 108727 22941397