16477980 has 48 divisors (see below), whose sum is σ = 46838400. Its totient is φ = 4327488.

The previous prime is 16477973. The next prime is 16478009. The reversal of 16477980 is 8977461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (975800).

Almost surely, 2^16477980 is an apocalyptic number.

16477980 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 16477980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23419200).

16477980 is an abundant number, since it is smaller than the sum of its proper divisors (30360420).

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

16477980 is a wasteful number, since it uses less digits than its factorization.

16477980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 16477980 is about 4059.3078227698. The cubic root of 16477980 is about 254.4688675744.

The spelling of 16477980 in words is "sixteen million, four hundred seventy-seven thousand, nine hundred eighty".