978479136 has 48 divisors (see below), whose sum is σ = 2853900000. Its totient is φ = 326159424.

The previous prime is 978479129. The next prime is 978479207. The reversal of 978479136 is 631974879.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565386 + ... + 567113.

It is an arithmetic number, because the mean of its divisors is an integer number (59456250).

Almost surely, 2^978479136 is an apocalyptic number.

978479136 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

978479136 is an abundant number, since it is smaller than the sum of its proper divisors (1875420864).

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

978479136 is a wasteful number, since it uses less digits than its factorization.

978479136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132518 (or 1132504 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 978479136 is about 31280.6511441178. The cubic root of 978479136 is about 992.7742935869.

The spelling of 978479136 in words is "nine hundred seventy-eight million, four hundred seventy-nine thousand, one hundred thirty-six".