428011532 has 24 divisors (see below), whose sum is σ = 808836336. Its totient is φ = 197005248.

The previous prime is 428011489. The next prime is 428011541. The reversal of 428011532 is 235110824.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8363 + ... + 30429.

It is an arithmetic number, because the mean of its divisors is an integer number (33701514).

Almost surely, 2^428011532 is an apocalyptic number.

It is an amenable number.

428011532 is a deficient number, since it is larger than the sum of its proper divisors (380824804).

428011532 is a wasteful number, since it uses less digits than its factorization.

428011532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22457 (or 22455 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 428011532 is about 20688.4395738296. The cubic root of 428011532 is about 753.6189727021.

The spelling of 428011532 in words is "four hundred twenty-eight million, eleven thousand, five hundred thirty-two".