428809038 has 16 divisors (see below), whose sum is σ = 980135040. Its totient is φ = 122516856.

The previous prime is 428809013. The next prime is 428809057. The reversal of 428809038 is 830908824.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 10209739 = 428809038 / (4 + 2 + 8 + 8 + 0 + 9 + 0 + 3 + 8).

It is a congruent number.

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, 5104828 + ... + 5104911.

It is an arithmetic number, because the mean of its divisors is an integer number (61258440).

Almost surely, 2^428809038 is an apocalyptic number.

428809038 is an abundant number, since it is smaller than the sum of its proper divisors (551326002).

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

428809038 is a wasteful number, since it uses less digits than its factorization.

428809038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10209751.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 428809038 is about 20707.7047979731. The cubic root of 428809038 is about 754.0867504030.

The spelling of 428809038 in words is "four hundred twenty-eight million, eight hundred nine thousand, thirty-eight".