16401002 has 8 divisors (see below), whose sum is σ = 24639876. Its totient is φ = 8187712.

The previous prime is 16400987. The next prime is 16401013. The reversal of 16401002 is 20010461.

16401002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15358561 + 1042441 = 3919^2 + 1021^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703 + ... + 7410.

Almost surely, 2^16401002 is an apocalyptic number.

16401002 is a deficient number, since it is larger than the sum of its proper divisors (8238874).

16401002 is a wasteful number, since it uses less digits than its factorization.

16401002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12792.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 16401002 is about 4049.8150575057. The cubic root of 16401002 is about 254.0719927368.

Adding to 16401002 its reverse (20010461), we get a palindrome (36411463).

The spelling of 16401002 in words is "sixteen million, four hundred one thousand, two".