16506412 has 12 divisors (see below), whose sum is σ = 31108336. Its totient is φ = 7618320.

The previous prime is 16506407. The next prime is 16506431. The reversal of 16506412 is 21460561.

It is a super-2 number, since 2×16506412² = 544923274227488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158664 + ... + 158767.

Almost surely, 2^16506412 is an apocalyptic number.

It is an amenable number.

16506412 is a deficient number, since it is larger than the sum of its proper divisors (14601924).

16506412 is a wasteful number, since it uses less digits than its factorization.

16506412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317448 (or 317446 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 16506412 is about 4062.8083882950. The cubic root of 16506412 is about 254.6151416034.

Adding to 16506412 its reverse (21460561), we get a palindrome (37966973).

The spelling of 16506412 in words is "sixteen million, five hundred six thousand, four hundred twelve".