16388427 has 16 divisors (see below), whose sum is σ = 24167808. Its totient is φ = 9794880.

The previous prime is 16388419. The next prime is 16388467. The reversal of 16388427 is 72488361.

16388427 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16388427 - 2³ = 16388419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16388417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993 + ... + 5810.

It is an arithmetic number, because the mean of its divisors is an integer number (1510488).

Almost surely, 2^16388427 is an apocalyptic number.

16388427 is a deficient number, since it is larger than the sum of its proper divisors (7779381).

16388427 is a wasteful number, since it uses less digits than its factorization.

16388427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its digits is 64512, while the sum is 39.

The square root of 16388427 is about 4048.2622197679. The cubic root of 16388427 is about 254.0070419855.

The spelling of 16388427 in words is "sixteen million, three hundred eighty-eight thousand, four hundred twenty-seven".