612051220 has 48 divisors (see below), whose sum is σ = 1417953600. Its totient is φ = 220056320.

The previous prime is 612051179. The next prime is 612051281. The reversal of 612051220 is 22150216.

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, 3951 + ... + 35209.

It is an arithmetic number, because the mean of its divisors is an integer number (29540700).

Almost surely, 2^612051220 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 612051220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708976800).

612051220 is an abundant number, since it is smaller than the sum of its proper divisors (805902380).

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

612051220 is a wasteful number, since it uses less digits than its factorization.

612051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31368 (or 31366 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 612051220 is about 24739.6689549396. The cubic root of 612051220 is about 849.0421597976.

The spelling of 612051220 in words is "six hundred twelve million, fifty-one thousand, two hundred twenty".