48428781 has 4 divisors (see below), whose sum is σ = 64571712. Its totient is φ = 32285852.

The previous prime is 48428773. The next prime is 48428791. The reversal of 48428781 is 18782484.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48428781 - 2³ = 48428773 is a prime.

It is a super-2 number, since 2×48428781² = 4690693658291922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48428791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8071461 + ... + 8071466.

It is an arithmetic number, because the mean of its divisors is an integer number (16142928).

Almost surely, 2^48428781 is an apocalyptic number.

It is an amenable number.

48428781 is a deficient number, since it is larger than the sum of its proper divisors (16142931).

48428781 is a wasteful number, since it uses less digits than its factorization.

48428781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16142930.

The product of its digits is 114688, while the sum is 42.

The square root of 48428781 is about 6959.0790338952. The cubic root of 48428781 is about 364.5030605210.

The spelling of 48428781 in words is "forty-eight million, four hundred twenty-eight thousand, seven hundred eighty-one".