16287401 has 4 divisors (see below), whose sum is σ = 17540292. Its totient is φ = 15034512.

The previous prime is 16287391. The next prime is 16287407. The reversal of 16287401 is 10478261.

16287401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10478261 = 1283 ⋅8167.

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 6528025 = 3124^2 + 2555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16287401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16287407) 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, 626426 + ... + 626451.

It is an arithmetic number, because the mean of its divisors is an integer number (4385073).

Almost surely, 2^16287401 is an apocalyptic number.

It is an amenable number.

16287401 is a deficient number, since it is larger than the sum of its proper divisors (1252891).

16287401 is a wasteful number, since it uses less digits than its factorization.

16287401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252890.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 16287401 is about 4035.7652310312. The cubic root of 16287401 is about 253.4840260337.

The spelling of 16287401 in words is "sixteen million, two hundred eighty-seven thousand, four hundred one".