16477812 has 72 divisors (see below), whose sum is σ = 45359496. Its totient is φ = 5013504.

The previous prime is 16477801. The next prime is 16477817. The reversal of 16477812 is 21877461.

16477812 is a `hidden beast` number, since 1 + 647 + 7 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4822416 + 11655396 = 2196^2 + 3414^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16477817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63988 + ... + 64244.

It is an arithmetic number, because the mean of its divisors is an integer number (629993).

Almost surely, 2^16477812 is an apocalyptic number.

16477812 is a gapful number since it is divisible by the number (12) 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 16477812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22679748).

16477812 is an abundant number, since it is smaller than the sum of its proper divisors (28881684).

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

16477812 is a wasteful number, since it uses less digits than its factorization.

16477812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 412 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 16477812 is about 4059.2871295340. The cubic root of 16477812 is about 254.4680027654.

The spelling of 16477812 in words is "sixteen million, four hundred seventy-seven thousand, eight hundred twelve".