428961332 has 6 divisors (see below), whose sum is σ = 750682338. Its totient is φ = 214480664.

The previous prime is 428961317. The next prime is 428961343. The reversal of 428961332 is 233169824.

It can be written as a sum of positive squares in only one way, i.e., 401040676 + 27920656 = 20026^2 + 5284^2 .

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, 53620163 + ... + 53620170.

It is an arithmetic number, because the mean of its divisors is an integer number (125113723).

Almost surely, 2^428961332 is an apocalyptic number.

It is an amenable number.

428961332 is a deficient number, since it is larger than the sum of its proper divisors (321721006).

428961332 is a wasteful number, since it uses less digits than its factorization.

428961332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107240337 (or 107240335 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 428961332 is about 20711.3817018566. The cubic root of 428961332 is about 754.1760125876.

The spelling of 428961332 in words is "four hundred twenty-eight million, nine hundred sixty-one thousand, three hundred thirty-two".