22015401 has 8 divisors (see below), whose sum is σ = 30069984. Its totient is φ = 14318880.

The previous prime is 22015397. The next prime is 22015403. The reversal of 22015401 is 10451022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22015401 - 2² = 22015397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22015403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89371 + ... + 89616.

It is an arithmetic number, because the mean of its divisors is an integer number (3758748).

Almost surely, 2^22015401 is an apocalyptic number.

It is an amenable number.

22015401 is a deficient number, since it is larger than the sum of its proper divisors (8054583).

22015401 is a wasteful number, since it uses less digits than its factorization.

22015401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179031.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22015401 is about 4692.0572247150. The cubic root of 22015401 is about 280.2693029772.

Adding to 22015401 its reverse (10451022), we get a palindrome (32466423).

The spelling of 22015401 in words is "twenty-two million, fifteen thousand, four hundred one".