278379471 has 8 divisors (see below), whose sum is σ = 393006384. Its totient is φ = 174669440.

The previous prime is 278379443. The next prime is 278379529. The reversal of 278379471 is 174973872.

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 278379471 - 2¹⁰ = 278378447 is a prime.

It is a super-3 number, since 3×278379471³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 278379471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278379401) 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, 2729160 + ... + 2729261.

It is an arithmetic number, because the mean of its divisors is an integer number (49125798).

Almost surely, 2^278379471 is an apocalyptic number.

278379471 is a deficient number, since it is larger than the sum of its proper divisors (114626913).

278379471 is a wasteful number, since it uses less digits than its factorization.

278379471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5458441.

The product of its digits is 592704, while the sum is 48.

The square root of 278379471 is about 16684.7076989679. The cubic root of 278379471 is about 652.9487103123.

The spelling of 278379471 in words is "two hundred seventy-eight million, three hundred seventy-nine thousand, four hundred seventy-one".