428890064 has 10 divisors (see below), whose sum is σ = 830974530. Its totient is φ = 214445024.

The previous prime is 428890061. The next prime is 428890117. The reversal of 428890064 is 460098824.

It can be written as a sum of positive squares in only one way, i.e., 427662400 + 1227664 = 20680^2 + 1108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428890061) 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 as a sum of consecutive naturals, namely, 13402799 + ... + 13402830.

It is an arithmetic number, because the mean of its divisors is an integer number (83097453).

Almost surely, 2^428890064 is an apocalyptic number.

It is an amenable number.

428890064 is a deficient number, since it is larger than the sum of its proper divisors (402084466).

428890064 is a wasteful number, since it uses less digits than its factorization.

428890064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26805637 (or 26805631 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 428890064 is about 20709.6611271165. The cubic root of 428890064 is about 754.1342437933.

The spelling of 428890064 in words is "four hundred twenty-eight million, eight hundred ninety thousand, sixty-four".