547978816 has 224 divisors, whose sum is σ = 1488789504. Its totient is φ = 193536000.

The previous prime is 547978789. The next prime is 547978853. The reversal of 547978816 is 618879745.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2596951 + ... + 2597161.

Almost surely, 2^547978816 is an apocalyptic number.

547978816 is a gapful number since it is divisible by the number (56) 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 547978816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744394752).

547978816 is an abundant number, since it is smaller than the sum of its proper divisors (940810688).

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

547978816 is a wasteful number, since it uses less digits than its factorization.

547978816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 279 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 55.

The square root of 547978816 is about 23408.9473492509. The cubic root of 547978816 is about 818.3164028872.

The spelling of 547978816 in words is "five hundred forty-seven million, nine hundred seventy-eight thousand, eight hundred sixteen".