428840264 has 8 divisors (see below), whose sum is σ = 804075510. Its totient is φ = 214420128.

The previous prime is 428840263. The next prime is 428840281. The reversal of 428840264 is 462048824.

It can be written as a sum of positive squares in only one way, i.e., 411684100 + 17156164 = 20290^2 + 4142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (428840263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26802509 + ... + 26802524.

Almost surely, 2^428840264 is an apocalyptic number.

It is an amenable number.

428840264 is a deficient number, since it is larger than the sum of its proper divisors (375235246).

428840264 is a wasteful number, since it uses less digits than its factorization.

428840264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53605039 (or 53605035 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 428840264 is about 20708.4587548180. The cubic root of 428840264 is about 754.1050542316.

The spelling of 428840264 in words is "four hundred twenty-eight million, eight hundred forty thousand, two hundred sixty-four".