16104621 has 8 divisors (see below), whose sum is σ = 23124640. Its totient is φ = 9910512.

The previous prime is 16104611. The next prime is 16104629. The reversal of 16104621 is 12640161.

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

It is not a de Polignac number, because 16104621 - 2¹³ = 16096429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16104629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206431 + ... + 206508.

It is an arithmetic number, because the mean of its divisors is an integer number (2890580).

Almost surely, 2^16104621 is an apocalyptic number.

It is an amenable number.

16104621 is a deficient number, since it is larger than the sum of its proper divisors (7020019).

16104621 is a wasteful number, since it uses less digits than its factorization.

16104621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412955.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16104621 is about 4013.0563165747. The cubic root of 16104621 is about 252.5322430479.

Adding to 16104621 its reverse (12640161), we get a palindrome (28744782).

The spelling of 16104621 in words is "sixteen million, one hundred four thousand, six hundred twenty-one".