654043240 has 16 divisors (see below), whose sum is σ = 1471597380. Its totient is φ = 261617280.

The previous prime is 654043231. The next prime is 654043277. The reversal of 654043240 is 42340456.

It can be written as a sum of positive squares in 2 ways, for example, as 653006916 + 1036324 = 25554^2 + 1018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 654043199 and 654043208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8175501 + ... + 8175580.

Almost surely, 2^654043240 is an apocalyptic number.

It is an amenable number.

654043240 is an abundant number, since it is smaller than the sum of its proper divisors (817554140).

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

654043240 is a wasteful number, since it uses less digits than its factorization.

654043240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351092 (or 16351088 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 654043240 is about 25574.2691000154. The cubic root of 654043240 is about 868.0315030296.

Adding to 654043240 its reverse (42340456), we get a palindrome (696383696).

It can be divided in two parts, 65404 and 3240, that added together give a square (68644 = 262²).

The spelling of 654043240 in words is "six hundred fifty-four million, forty-three thousand, two hundred forty".