278620898 has 8 divisors (see below), whose sum is σ = 423817920. Its totient is φ = 137348260.

The previous prime is 278620897. The next prime is 278620931. The reversal of 278620898 is 898026872.

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

It is not an unprimeable number, because it can be changed into a prime (278620897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980918 + ... + 981201.

It is an arithmetic number, because the mean of its divisors is an integer number (52977240).

Almost surely, 2^278620898 is an apocalyptic number.

278620898 is a deficient number, since it is larger than the sum of its proper divisors (145197022).

278620898 is a wasteful number, since it uses less digits than its factorization.

278620898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962192.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 278620898 is about 16691.9411094097. The cubic root of 278620898 is about 653.1374142402.

The spelling of 278620898 in words is "two hundred seventy-eight million, six hundred twenty thousand, eight hundred ninety-eight".