978540104 has 8 divisors (see below), whose sum is σ = 1834762710. Its totient is φ = 489270048.

The previous prime is 978540103. The next prime is 978540131. The reversal of 978540104 is 401045879.

It can be written as a sum of positive squares in only one way, i.e., 542983204 + 435556900 = 23302^2 + 20870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (978540103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61158749 + ... + 61158764.

Almost surely, 2^978540104 is an apocalyptic number.

It is an amenable number.

978540104 is a deficient number, since it is larger than the sum of its proper divisors (856222606).

978540104 is a wasteful number, since it uses less digits than its factorization.

978540104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122317519 (or 122317515 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 978540104 is about 31281.6256610810. The cubic root of 978540104 is about 992.7949127307.

The spelling of 978540104 in words is "nine hundred seventy-eight million, five hundred forty thousand, one hundred four".