16729740 has 120 divisors (see below), whose sum is σ = 54885600. Its totient is φ = 4257792.

The previous prime is 16729721. The next prime is 16729777. The reversal of 16729740 is 4792761.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16729695 and 16729704.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37036 + ... + 37484.

It is an arithmetic number, because the mean of its divisors is an integer number (457380).

Almost surely, 2^16729740 is an apocalyptic number.

16729740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16729740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27442800).

16729740 is an abundant number, since it is smaller than the sum of its proper divisors (38155860).

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

16729740 is a wasteful number, since it uses less digits than its factorization.

16729740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 16729740 is about 4090.2004840839. The cubic root of 16729740 is about 255.7582964431.

The spelling of 16729740 in words is "sixteen million, seven hundred twenty-nine thousand, seven hundred forty".