16290481 has 4 divisors (see below), whose sum is σ = 16307200. Its totient is φ = 16273764.

The previous prime is 16290473. The next prime is 16290497. The reversal of 16290481 is 18409261.

16290481 = T₃₂₉₄ + T₃₂₉₅ + T₃₂₉₆.

It is a happy number.

16290481 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18409261 = 13 ⋅1416097.

It is a cyclic number.

It is not a de Polignac number, because 16290481 - 2³ = 16290473 is a prime.

It is a super-2 number, since 2×16290481² = 530759542422722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16290401) 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, 6801 + ... + 8878.

It is an arithmetic number, because the mean of its divisors is an integer number (4076800).

Almost surely, 2^16290481 is an apocalyptic number.

16290481 is the 3296-th centered triangular number.

It is an amenable number.

16290481 is a deficient number, since it is larger than the sum of its proper divisors (16719).

16290481 is a wasteful number, since it uses less digits than its factorization.

16290481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16718.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 16290481 is about 4036.1468010963. The cubic root of 16290481 is about 253.5000032419.

The spelling of 16290481 in words is "sixteen million, two hundred ninety thousand, four hundred eighty-one".