16047381 has 32 divisors (see below), whose sum is σ = 26460160. Its totient is φ = 8444736.

The previous prime is 16047373. The next prime is 16047391. The reversal of 16047381 is 18374061.

It is a happy number.

It is not a de Polignac number, because 16047381 - 2³ = 16047373 is a prime.

It is a super-2 number, since 2×16047381² = 515036873918322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16047391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14220 + ... + 15306.

It is an arithmetic number, because the mean of its divisors is an integer number (826880).

Almost surely, 2^16047381 is an apocalyptic number.

It is an amenable number.

16047381 is a deficient number, since it is larger than the sum of its proper divisors (10412779).

16047381 is a wasteful number, since it uses less digits than its factorization.

16047381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 16047381 is about 4005.9182467944. The cubic root of 16047381 is about 252.2326995187.

The spelling of 16047381 in words is "sixteen million, forty-seven thousand, three hundred eighty-one".