612284540 has 96 divisors (see below), whose sum is σ = 1528934400. Its totient is φ = 201519360.

The previous prime is 612284531. The next prime is 612284579. The reversal of 612284540 is 45482216.

It is a junction number, because it is equal to n+sod(n) for n = 612284497 and 612284506.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 970025 + ... + 970655.

It is an arithmetic number, because the mean of its divisors is an integer number (15926400).

Almost surely, 2^612284540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612284540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764467200).

612284540 is an abundant number, since it is smaller than the sum of its proper divisors (916649860).

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

612284540 is a wasteful number, since it uses less digits than its factorization.

612284540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 612284540 is about 24744.3840093060. The cubic root of 612284540 is about 849.1500338574.

The spelling of 612284540 in words is "six hundred twelve million, two hundred eighty-four thousand, five hundred forty".