16427745 has 16 divisors (see below), whose sum is σ = 29205120. Its totient is φ = 8761392.

The previous prime is 16427731. The next prime is 16427759. The reversal of 16427745 is 54772461.

16427745 is a `hidden beast` number, since 1 + 642 + 7 + 7 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (16427731) and next prime (16427759).

It is not a de Polignac number, because 16427745 - 2⁵ = 16427713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60709 + ... + 60978.

It is an arithmetic number, because the mean of its divisors is an integer number (1825320).

Almost surely, 2^16427745 is an apocalyptic number.

16427745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16427745 is a deficient number, since it is larger than the sum of its proper divisors (12777375).

16427745 is a wasteful number, since it uses less digits than its factorization.

16427745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121701 (or 121695 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 16427745 is about 4053.1154683774. The cubic root of 16427745 is about 254.2100118975.

The spelling of 16427745 in words is "sixteen million, four hundred twenty-seven thousand, seven hundred forty-five".