978956 has 24 divisors (see below), whose sum is σ = 1968960. Its totient is φ = 421200.

The previous prime is 978947. The next prime is 978973. The reversal of 978956 is 659879.

978956 = T₁₂₁ + T₁₂₂ + ... + T₁₉₆.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (82040).

2⁹⁷⁸⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

978956 is an abundant number, since it is smaller than the sum of its proper divisors (990004).

It is a weird number, because it is abundant, but not a pseudoperfect number.

978956 is a wasteful number, since it uses less digits than its factorization.

978956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1203 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 978956 is about 989.4220535242. The cubic root of 978956 is about 99.2935544320.

The spelling of 978956 in words is "nine hundred seventy-eight thousand, nine hundred fifty-six".