730638278 has 8 divisors (see below), whose sum is σ = 1099698768. Its totient is φ = 364072024.

The previous prime is 730638253. The next prime is 730638281. The reversal of 730638278 is 872836037.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622826 + ... + 623997.

It is an arithmetic number, because the mean of its divisors is an integer number (137462346).

Almost surely, 2^730638278 is an apocalyptic number.

730638278 is a deficient number, since it is larger than the sum of its proper divisors (369060490).

730638278 is a wasteful number, since it uses less digits than its factorization.

730638278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247118.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 730638278 is about 27030.3214557282. The cubic root of 730638278 is about 900.6736840735.

The spelling of 730638278 in words is "seven hundred thirty million, six hundred thirty-eight thousand, two hundred seventy-eight".