612278394 has 32 divisors (see below), whose sum is σ = 1507148160. Its totient is φ = 161479872.

The previous prime is 612278371. The next prime is 612278413. The reversal of 612278394 is 493872216.

612278394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 560149 + ... + 561240.

It is an arithmetic number, because the mean of its divisors is an integer number (47098380).

Almost surely, 2^612278394 is an apocalyptic number.

612278394 is an abundant number, since it is smaller than the sum of its proper divisors (894869766).

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

612278394 is a wasteful number, since it uses less digits than its factorization.

612278394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121414.

The product of its digits is 145152, while the sum is 42.

The square root of 612278394 is about 24744.2598191985. The cubic root of 612278394 is about 849.1471926437.

The spelling of 612278394 in words is "six hundred twelve million, two hundred seventy-eight thousand, three hundred ninety-four".