16672740 has 144 divisors (see below), whose sum is σ = 55847232. Its totient is φ = 3704064.

The previous prime is 16672729. The next prime is 16672741. The reversal of 16672740 is 4727661.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16672741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155767 + ... + 155873.

It is an arithmetic number, because the mean of its divisors is an integer number (387828).

Almost surely, 2^16672740 is an apocalyptic number.

16672740 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 16672740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27923616).

16672740 is an abundant number, since it is smaller than the sum of its proper divisors (39174492).

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

16672740 is a wasteful number, since it uses less digits than its factorization.

16672740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 16672740 is about 4083.2266652734. The cubic root of 16672740 is about 255.4675007140.

The spelling of 16672740 in words is "sixteen million, six hundred seventy-two thousand, seven hundred forty".