978215152 has 20 divisors (see below), whose sum is σ = 1995044680. Its totient is φ = 463364928.

The previous prime is 978215143. The next prime is 978215177. The reversal of 978215152 is 251512879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608603 + ... + 1609210.

It is an arithmetic number, because the mean of its divisors is an integer number (99752234).

Almost surely, 2^978215152 is an apocalyptic number.

It is an amenable number.

978215152 is an abundant number, since it is smaller than the sum of its proper divisors (1016829528).

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

978215152 is a wasteful number, since it uses less digits than its factorization.

978215152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217840 (or 3217834 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 978215152 is about 31276.4312542208. The cubic root of 978215152 is about 992.6850053260.

The spelling of 978215152 in words is "nine hundred seventy-eight million, two hundred fifteen thousand, one hundred fifty-two".