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22140157 = 131703089
BaseRepresentation
bin101010001110…
…1010011111101
31112122211120211
41110131103331
521131441112
62110312421
7356121364
oct124352375
945584524
1022140157
1111552256
1274b8711
1347825b0
142d247db
151e250a7
hex151d4fd

22140157 has 4 divisors (see below), whose sum is σ = 23843260. Its totient is φ = 20437056.

The previous prime is 22140121. The next prime is 22140199. The reversal of 22140157 is 75104122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15202201 + 6937956 = 3899^2 + 2634^2 .

It is a cyclic number.

It is not a de Polignac number, because 22140157 - 27 = 22140029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140557) 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, 851532 + ... + 851557.

It is an arithmetic number, because the mean of its divisors is an integer number (5960815).

Almost surely, 222140157 is an apocalyptic number.

It is an amenable number.

22140157 is a deficient number, since it is larger than the sum of its proper divisors (1703103).

22140157 is a wasteful number, since it uses less digits than its factorization.

22140157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703102.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 22140157 is about 4705.3328256352. The cubic root of 22140157 is about 280.7977124255.

Adding to 22140157 its reverse (75104122), we get a palindrome (97244279).

The spelling of 22140157 in words is "twenty-two million, one hundred forty thousand, one hundred fifty-seven".

Divisors: 1 13 1703089 22140157