278990741 has 8 divisors (see below), whose sum is σ = 280898304. Its totient is φ = 277089120.

The previous prime is 278990711. The next prime is 278990753. The reversal of 278990741 is 147099872.

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

It is a cyclic number.

It is not a de Polignac number, because 278990741 - 2¹⁰ = 278989717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278990711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129116 + ... + 131258.

It is an arithmetic number, because the mean of its divisors is an integer number (35112288).

Almost surely, 2^278990741 is an apocalyptic number.

It is an amenable number.

278990741 is a deficient number, since it is larger than the sum of its proper divisors (1907563).

278990741 is a wasteful number, since it uses less digits than its factorization.

278990741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 278990741 is about 16703.0159252753. The cubic root of 278990741 is about 653.4262792646.

The spelling of 278990741 in words is "two hundred seventy-eight million, nine hundred ninety thousand, seven hundred forty-one".