22401539 has 8 divisors (see below), whose sum is σ = 23569728. Its totient is φ = 21263040.

The previous prime is 22401527. The next prime is 22401541. The reversal of 22401539 is 93510422.

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 22401539 - 2¹² = 22397443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22401559) 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, 5867 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (2946216).

Almost surely, 2^22401539 is an apocalyptic number.

22401539 is a deficient number, since it is larger than the sum of its proper divisors (1168189).

22401539 is a wasteful number, since it uses less digits than its factorization.

22401539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14845.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22401539 is about 4733.0264102369. The cubic root of 22401539 is about 281.8984049638.

The spelling of 22401539 in words is "twenty-two million, four hundred one thousand, five hundred thirty-nine".