48278781 has 8 divisors (see below), whose sum is σ = 71524160. Its totient is φ = 32185836.

The previous prime is 48278761. The next prime is 48278803. The reversal of 48278781 is 18787284.

It is not a de Polignac number, because 48278781 - 2¹¹ = 48276733 is a prime.

It is a super-2 number, since 2×48278781² = 4661681389691922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48278701) 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, 894025 + ... + 894078.

It is an arithmetic number, because the mean of its divisors is an integer number (8940520).

Almost surely, 2^48278781 is an apocalyptic number.

It is an amenable number.

48278781 is a deficient number, since it is larger than the sum of its proper divisors (23245379).

48278781 is a wasteful number, since it uses less digits than its factorization.

48278781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788112 (or 1788106 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 48278781 is about 6948.2933875881. The cubic root of 48278781 is about 364.1263423476.

The spelling of 48278781 in words is "forty-eight million, two hundred seventy-eight thousand, seven hundred eighty-one".