16423451 has 6 divisors (see below), whose sum is σ = 18052356. Its totient is φ = 14930300.

The previous prime is 16423447. The next prime is 16423469. The reversal of 16423451 is 15432461.

It is not a de Polignac number, because 16423451 - 2² = 16423447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16423451.

It is not an unprimeable number, because it can be changed into a prime (16423441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67745 + ... + 67986.

It is an arithmetic number, because the mean of its divisors is an integer number (3008726).

Almost surely, 2^16423451 is an apocalyptic number.

16423451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16423451 is a deficient number, since it is larger than the sum of its proper divisors (1628905).

16423451 is a wasteful number, since it uses less digits than its factorization.

16423451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135753 (or 135742 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 16423451 is about 4052.5857177856. The cubic root of 16423451 is about 254.1878608980.

The spelling of 16423451 in words is "sixteen million, four hundred twenty-three thousand, four hundred fifty-one".