487290978 has 20 divisors (see below), whose sum is σ = 1091893110. Its totient is φ = 162430272.

The previous prime is 487290977. The next prime is 487290983. The reversal of 487290978 is 879092784.

487290978 is a `hidden beast` number, since 487 + 2 + 90 + 9 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 440874009 + 46416969 = 20997^2 + 6813^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (487290977) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1503823 + ... + 1504146.

Almost surely, 2^487290978 is an apocalyptic number.

487290978 is an abundant number, since it is smaller than the sum of its proper divisors (604602132).

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

487290978 is a wasteful number, since it uses less digits than its factorization.

487290978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007983 (or 3007974 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 487290978 is about 22074.6682421277. The cubic root of 487290978 is about 786.9179590354.

The spelling of 487290978 in words is "four hundred eighty-seven million, two hundred ninety thousand, nine hundred seventy-eight".