654928440 has 64 divisors (see below), whose sum is σ = 1984275360. Its totient is φ = 172915200.

The previous prime is 654928433. The next prime is 654928501. The reversal of 654928440 is 44829456.

It is a junction number, because it is equal to n+sod(n) for n = 654928392 and 654928401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14899 + ... + 39138.

Almost surely, 2^654928440 is an apocalyptic number.

654928440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

654928440 is an abundant number, since it is smaller than the sum of its proper divisors (1329346920).

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

654928440 is a wasteful number, since it uses less digits than its factorization.

654928440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54152 (or 54148 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 654928440 is about 25591.5697056667. The cubic root of 654928440 is about 868.4229323472.

The spelling of 654928440 in words is "six hundred fifty-four million, nine hundred twenty-eight thousand, four hundred forty".