16426457 has 4 divisors (see below), whose sum is σ = 16671696. Its totient is φ = 16181220.

The previous prime is 16426433. The next prime is 16426477. The reversal of 16426457 is 75462461.

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: 75462461 = 2383 ⋅31667.

It is a cyclic number.

It is not a de Polignac number, because 16426457 - 2¹⁰ = 16425433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16426427) 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, 122519 + ... + 122652.

It is an arithmetic number, because the mean of its divisors is an integer number (4167924).

Almost surely, 2^16426457 is an apocalyptic number.

It is an amenable number.

16426457 is a deficient number, since it is larger than the sum of its proper divisors (245239).

16426457 is an equidigital number, since it uses as much as digits as its factorization.

16426457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245238.

The product of its digits is 40320, while the sum is 35.

The square root of 16426457 is about 4052.9565751436. The cubic root of 16426457 is about 254.2033680346.

The spelling of 16426457 in words is "sixteen million, four hundred twenty-six thousand, four hundred fifty-seven".