978288450 has 24 divisors (see below), whose sum is σ = 2426155728. Its totient is φ = 260876880.

The previous prime is 978288449. The next prime is 978288457. The reversal of 978288450 is 54882879.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 978288393 and 978288402.

It is not an unprimeable number, because it can be changed into a prime (978288457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3260812 + ... + 3261111.

It is an arithmetic number, because the mean of its divisors is an integer number (101089822).

Almost surely, 2^978288450 is an apocalyptic number.

978288450 is an abundant number, since it is smaller than the sum of its proper divisors (1447867278).

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

978288450 is a wasteful number, since it uses less digits than its factorization.

978288450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521938 (or 6521933 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 978288450 is about 31277.6030091821. The cubic root of 978288450 is about 992.7097987838.

The spelling of 978288450 in words is "nine hundred seventy-eight million, two hundred eighty-eight thousand, four hundred fifty".