428033865 has 48 divisors (see below), whose sum is σ = 801100800. Its totient is φ = 194584320.

The previous prime is 428033863. The next prime is 428033867. The reversal of 428033865 is 568330824.

It is an interprime number because it is at equal distance from previous prime (428033863) and next prime (428033867).

It is not a de Polignac number, because 428033865 - 2¹ = 428033863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428033863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138861 + ... + 141909.

It is an arithmetic number, because the mean of its divisors is an integer number (16689600).

Almost surely, 2^428033865 is an apocalyptic number.

It is an amenable number.

428033865 is a deficient number, since it is larger than the sum of its proper divisors (373066935).

428033865 is a wasteful number, since it uses less digits than its factorization.

428033865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 428033865 is about 20688.9793126679. The cubic root of 428033865 is about 753.6320800435.

The spelling of 428033865 in words is "four hundred twenty-eight million, thirty-three thousand, eight hundred sixty-five".