16291456 has 16 divisors (see below), whose sum is σ = 32455890. Its totient is φ = 8145664.

The previous prime is 16291439. The next prime is 16291463. The reversal of 16291456 is 65419261.

It can be written as a sum of positive squares in only one way, i.e., 11451456 + 4840000 = 3384^2 + 2200^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63511 + ... + 63766.

Almost surely, 2^16291456 is an apocalyptic number.

16291456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16291456 is a deficient number, since it is larger than the sum of its proper divisors (16164434).

16291456 is an equidigital number, since it uses as much as digits as its factorization.

16291456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127291 (or 127279 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 16291456 is about 4036.2675828047. The cubic root of 16291456 is about 253.5050605424.

The spelling of 16291456 in words is "sixteen million, two hundred ninety-one thousand, four hundred fifty-six".