3124220640 has 96 divisors (see below), whose sum is σ = 10269213696. Its totient is φ = 796899840.

The previous prime is 3124220587. The next prime is 3124220647. The reversal of 3124220640 is 460224213.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3124220640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124220647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 130456 + ... + 152535.

It is an arithmetic number, because the mean of its divisors is an integer number (106970976).

Almost surely, 2^3124220640 is an apocalyptic number.

3124220640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3124220640 is an abundant number, since it is smaller than the sum of its proper divisors (7144993056).

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

3124220640 is a wasteful number, since it uses less digits than its factorization.

3124220640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283032 (or 283024 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 3124220640 is about 55894.7281950633. The cubic root of 3124220640 is about 1461.8873196698.

Adding to 3124220640 its reverse (460224213), we get a palindrome (3584444853).

The spelling of 3124220640 in words is "three billion, one hundred twenty-four million, two hundred twenty thousand, six hundred forty".