488781378 has 54 divisors (see below), whose sum is σ = 1105429689. Its totient is φ = 162082944.

The previous prime is 488781373. The next prime is 488781383. The reversal of 488781378 is 873187884.

It is an interprime number because it is at equal distance from previous prime (488781373) and next prime (488781383).

It can be written as a sum of positive squares in 2 ways, for example, as 453817809 + 34963569 = 21303^2 + 5913^2 .

It is a tau number, because it is divible by the number of its divisors (54).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=15633.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (488781373) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2532450 + ... + 2532642.

Almost surely, 2^488781378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 488781378

488781378 is an abundant number, since it is smaller than the sum of its proper divisors (616648311).

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

488781378 is an frugal number, since it uses more digits than its factorization.

488781378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 198 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 488781378 is about 22108.4006205786. The cubic root of 488781378 is about 787.7194164107.

The spelling of 488781378 in words is "four hundred eighty-eight million, seven hundred eighty-one thousand, three hundred seventy-eight".