981078480 has 240 divisors, whose sum is σ = 3455612160. Its totient is φ = 258660864.

The previous prime is 981078457. The next prime is 981078481. The reversal of 981078480 is 84870189.

981078480 is a `hidden beast` number, since 98 + 10 + 78 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×981078480² = 1925029967838220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981078481) 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, 2118729 + ... + 2119191.

It is an arithmetic number, because the mean of its divisors is an integer number (14398384).

Almost surely, 2^981078480 is an apocalyptic number.

981078480 is a gapful number since it is divisible by the number (90) 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 981078480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727806080).

981078480 is an abundant number, since it is smaller than the sum of its proper divisors (2474533680).

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

981078480 is a wasteful number, since it uses less digits than its factorization.

981078480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 981078480 is about 31322.1723384570. The cubic root of 981078480 is about 993.6526227118.

The spelling of 981078480 in words is "nine hundred eighty-one million, seventy-eight thousand, four hundred eighty".