978532 has 6 divisors (see below), whose sum is σ = 1712438. Its totient is φ = 489264.

The previous prime is 978521. The next prime is 978541. The reversal of 978532 is 235879.

978532 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 599076 + 379456 = 774^2 + 616^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

978532 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122313 + ... + 122320.

2⁹⁷⁸⁵³² is an apocalyptic number.

It is an amenable number.

978532 is a deficient number, since it is larger than the sum of its proper divisors (733906).

978532 is a wasteful number, since it uses less digits than its factorization.

978532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244637 (or 244635 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 978532 is about 989.2077638191. The cubic root of 978532 is about 99.2792172038.

The spelling of 978532 in words is "nine hundred seventy-eight thousand, five hundred thirty-two".