16401382 has 4 divisors (see below), whose sum is σ = 24602076. Its totient is φ = 8200690.

The previous prime is 16401377. The next prime is 16401391. The reversal of 16401382 is 28310461.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4100344 + ... + 4100347.

It is an arithmetic number, because the mean of its divisors is an integer number (6150519).

Almost surely, 2^16401382 is an apocalyptic number.

16401382 is a deficient number, since it is larger than the sum of its proper divisors (8200694).

16401382 is an equidigital number, since it uses as much as digits as its factorization.

16401382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200693.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 16401382 is about 4049.8619729566. The cubic root of 16401382 is about 254.0739549464.

The spelling of 16401382 in words is "sixteen million, four hundred one thousand, three hundred eighty-two".