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22136401 = 77734091
BaseRepresentation
bin101010001110…
…0011001010001
31112122122102201
41110130121101
521131331101
62110243201
7356104420
oct124343121
945578381
1022136401
111154a451
1274b6501
134780981
142d232b7
151e23e01
hex151c651

22136401 has 8 divisors (see below), whose sum is σ = 25337664. Its totient is φ = 18944880.

The previous prime is 22136399. The next prime is 22136407. The reversal of 22136401 is 10463122.

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 22136401 - 21 = 22136399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22136407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3366 + ... + 7456.

It is an arithmetic number, because the mean of its divisors is an integer number (3167208).

Almost surely, 222136401 is an apocalyptic number.

It is an amenable number.

22136401 is a deficient number, since it is larger than the sum of its proper divisors (3201263).

22136401 is an equidigital number, since it uses as much as digits as its factorization.

22136401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22136401 is about 4704.9336870991. The cubic root of 22136401 is about 280.7818327451.

Adding to 22136401 its reverse (10463122), we get a palindrome (32599523).

The spelling of 22136401 in words is "twenty-two million, one hundred thirty-six thousand, four hundred one".

Divisors: 1 7 773 4091 5411 28637 3162343 22136401