612130340 has 48 divisors (see below), whose sum is σ = 1329613824. Its totient is φ = 236476800.

The previous prime is 612130319. The next prime is 612130403. The reversal of 612130340 is 43031216.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599030 + ... + 600050.

It is an arithmetic number, because the mean of its divisors is an integer number (27700288).

Almost surely, 2^612130340 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 612130340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664806912).

612130340 is an abundant number, since it is smaller than the sum of its proper divisors (717483484).

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

612130340 is a wasteful number, since it uses less digits than its factorization.

612130340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 612130340 is about 24741.2679545734. The cubic root of 612130340 is about 849.0787435121.

Adding to 612130340 its reverse (43031216), we get a palindrome (655161556).

The spelling of 612130340 in words is "six hundred twelve million, one hundred thirty thousand, three hundred forty".