278053040 has 40 divisors (see below), whose sum is σ = 655591968. Its totient is φ = 109652480.

The previous prime is 278052991. The next prime is 278053079. The reversal of 278053040 is 40350872.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 278052994 and 278053012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18797 + ... + 30156.

Almost surely, 2^278053040 is an apocalyptic number.

278053040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278053040 is an abundant number, since it is smaller than the sum of its proper divisors (377538928).

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

278053040 is a wasteful number, since it uses less digits than its factorization.

278053040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49037 (or 49031 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 278053040 is about 16674.9224885755. The cubic root of 278053040 is about 652.6933920769.

The spelling of 278053040 in words is "two hundred seventy-eight million, fifty-three thousand, forty".