612412020 has 144 divisors (see below), whose sum is σ = 2073943872. Its totient is φ = 144990720.

The previous prime is 612412019. The next prime is 612412043. The reversal of 612412020 is 20214216.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 612411984 and 612412002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81544 + ... + 88736.

It is an arithmetic number, because the mean of its divisors is an integer number (14402388).

Almost surely, 2^612412020 is an apocalyptic number.

612412020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612412020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036971936).

612412020 is an abundant number, since it is smaller than the sum of its proper divisors (1461531852).

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

612412020 is a wasteful number, since it uses less digits than its factorization.

612412020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262 (or 7257 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 612412020 is about 24746.9598132781. The cubic root of 612412020 is about 849.2089618706.

Adding to 612412020 its reverse (20214216), we get a palindrome (632626236).

The spelling of 612412020 in words is "six hundred twelve million, four hundred twelve thousand, twenty".