654028040 has 16 divisors (see below), whose sum is σ = 1471563180. Its totient is φ = 261611200.

The previous prime is 654028019. The next prime is 654028079. The reversal of 654028040 is 40820456.

It can be written as a sum of positive squares in 2 ways, for example, as 588644644 + 65383396 = 24262^2 + 8086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 654027994 and 654028012.

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, 8175311 + ... + 8175390.

Almost surely, 2^654028040 is an apocalyptic number.

It is an amenable number.

654028040 is an abundant number, since it is smaller than the sum of its proper divisors (817535140).

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

654028040 is a wasteful number, since it uses less digits than its factorization.

654028040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16350712 (or 16350708 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 654028040 is about 25573.9719245955. The cubic root of 654028040 is about 868.0247786112.

Adding to 654028040 its reverse (40820456), we get a palindrome (694848496).

The spelling of 654028040 in words is "six hundred fifty-four million, twenty-eight thousand, forty".