978227460 has 144 divisors (see below), whose sum is σ = 3483008256. Its totient is φ = 217541376.

The previous prime is 978227441. The next prime is 978227473. The reversal of 978227460 is 64722879.

978227460 is a `hidden beast` number, since 97 + 82 + 27 + 460 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36129 + ... + 57111.

Almost surely, 2^978227460 is an apocalyptic number.

978227460 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 978227460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741504128).

978227460 is an abundant number, since it is smaller than the sum of its proper divisors (2504780796).

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

978227460 is a wasteful number, since it uses less digits than its factorization.

978227460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042 (or 21037 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 978227460 is about 31276.6280151809. The cubic root of 978227460 is about 992.6891686622.

The spelling of 978227460 in words is "nine hundred seventy-eight million, two hundred twenty-seven thousand, four hundred sixty".