16241391 has 14 divisors (see below), whose sum is σ = 24352040. Its totient is φ = 10827108.

The previous prime is 16241387. The next prime is 16241411. The reversal of 16241391 is 19314261.

16241391 is a `hidden beast` number, since 1 + 624 + 1 + 39 + 1 = 666.

It is not a de Polignac number, because 16241391 - 2² = 16241387 is a prime.

It is a super-2 number, since 2×16241391² = 527565563229762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16241591) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 10411 + ... + 11868.

Almost surely, 2^16241391 is an apocalyptic number.

16241391 is a deficient number, since it is larger than the sum of its proper divisors (8110649).

16241391 is an frugal number, since it uses more digits than its factorization.

16241391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22297 (or 22282 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 16241391 is about 4030.0609176537. The cubic root of 16241391 is about 253.2451133649.

The spelling of 16241391 in words is "sixteen million, two hundred forty-one thousand, three hundred ninety-one".