16201427 has 4 divisors (see below), whose sum is σ = 17674296. Its totient is φ = 14728560.

The previous prime is 16201421. The next prime is 16201429. The reversal of 16201427 is 72410261.

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

It is not a de Polignac number, because 16201427 - 2¹² = 16197331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16201421) 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, 736418 + ... + 736439.

It is an arithmetic number, because the mean of its divisors is an integer number (4418574).

Almost surely, 2^16201427 is an apocalyptic number.

16201427 is a deficient number, since it is larger than the sum of its proper divisors (1472869).

16201427 is a wasteful number, since it uses less digits than its factorization.

16201427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472868.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 16201427 is about 4025.0996260962. The cubic root of 16201427 is about 253.0372288688.

Adding to 16201427 its reverse (72410261), we get a palindrome (88611688).

The spelling of 16201427 in words is "sixteen million, two hundred one thousand, four hundred twenty-seven".