16740020 has 24 divisors (see below), whose sum is σ = 38350368. Its totient is φ = 6087200.

The previous prime is 16739993. The next prime is 16740023. The reversal of 16740020 is 2004761.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 16739974 and 16740001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16740023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37826 + ... + 38265.

It is an arithmetic number, because the mean of its divisors is an integer number (1597932).

Almost surely, 2^16740020 is an apocalyptic number.

16740020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16740020 is an abundant number, since it is smaller than the sum of its proper divisors (21610348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16740020 is a wasteful number, since it uses less digits than its factorization.

16740020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76111 (or 76109 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 16740020 is about 4091.4569532136. The cubic root of 16740020 is about 255.8106713744.

Adding to 16740020 its reverse (2004761), we get a palindrome (18744781).

The spelling of 16740020 in words is "sixteen million, seven hundred forty thousand, twenty".