428051828 has 6 divisors (see below), whose sum is σ = 749090706. Its totient is φ = 214025912.

The previous prime is 428051807. The next prime is 428051831. The reversal of 428051828 is 828150824.

It can be written as a sum of positive squares in only one way, i.e., 375894544 + 52157284 = 19388^2 + 7222^2 .

It is a junction number, because it is equal to n+sod(n) for n = 428051791 and 428051800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53506475 + ... + 53506482.

It is an arithmetic number, because the mean of its divisors is an integer number (124848451).

Almost surely, 2^428051828 is an apocalyptic number.

It is an amenable number.

428051828 is a deficient number, since it is larger than the sum of its proper divisors (321038878).

428051828 is a wasteful number, since it uses less digits than its factorization.

428051828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107012961 (or 107012959 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 428051828 is about 20689.4134281279. The cubic root of 428051828 is about 753.6426222807.

The spelling of 428051828 in words is "four hundred twenty-eight million, fifty-one thousand, eight hundred twenty-eight".