612287280 has 240 divisors, whose sum is σ = 2269167264. Its totient is φ = 146718720.

The previous prime is 612287279. The next prime is 612287287. The reversal of 612287280 is 82782216.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (612287287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 767842 + ... + 768638.

Almost surely, 2^612287280 is an apocalyptic number.

612287280 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 612287280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134583632).

612287280 is an abundant number, since it is smaller than the sum of its proper divisors (1656879984).

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

612287280 is a wasteful number, since it uses less digits than its factorization.

612287280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 612287280 is about 24744.4393753425. The cubic root of 612287280 is about 849.1513005166.

The spelling of 612287280 in words is "six hundred twelve million, two hundred eighty-seven thousand, two hundred eighty".