978152427 has 48 divisors (see below), whose sum is σ = 1642437888. Its totient is φ = 549426240.

The previous prime is 978152423. The next prime is 978152429. The reversal of 978152427 is 724251879.

It is a happy number.

978152427 is a `hidden beast` number, since 9 + 78 + 152 + 427 = 666.

It is not a de Polignac number, because 978152427 - 2² = 978152423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978152423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1479477 + ... + 1480137.

It is an arithmetic number, because the mean of its divisors is an integer number (34217456).

Almost surely, 2^978152427 is an apocalyptic number.

978152427 is a deficient number, since it is larger than the sum of its proper divisors (664285461).

978152427 is a wasteful number, since it uses less digits than its factorization.

978152427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1037 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 978152427 is about 31275.4284862734. The cubic root of 978152427 is about 992.6637872610.

The spelling of 978152427 in words is "nine hundred seventy-eight million, one hundred fifty-two thousand, four hundred twenty-seven".