16778832 has 40 divisors (see below), whose sum is σ = 49538496. Its totient is φ = 4793856.

The previous prime is 16778821. The next prime is 16778837. The reversal of 16778832 is 23887761.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16778837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24633 + ... + 25304.

Almost surely, 2^16778832 is an apocalyptic number.

16778832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16778832 is an abundant number, since it is smaller than the sum of its proper divisors (32759664).

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

16778832 is a wasteful number, since it uses less digits than its factorization.

16778832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49955 (or 49949 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 16778832 is about 4096.1972608750. The cubic root of 16778832 is about 256.0082191372.

The spelling of 16778832 in words is "sixteen million, seven hundred seventy-eight thousand, eight hundred thirty-two".