428212851 has 16 divisors (see below), whose sum is σ = 625658880. Its totient is φ = 258354720.

The previous prime is 428212819. The next prime is 428212891. The reversal of 428212851 is 158212824.

It is not a de Polignac number, because 428212851 - 2⁵ = 428212819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (428212801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21736 + ... + 36453.

It is an arithmetic number, because the mean of its divisors is an integer number (39103680).

Almost surely, 2^428212851 is an apocalyptic number.

428212851 is a deficient number, since it is larger than the sum of its proper divisors (197446029).

428212851 is a wasteful number, since it uses less digits than its factorization.

428212851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58426.

The product of its digits is 10240, while the sum is 33.

The square root of 428212851 is about 20693.3044968656. The cubic root of 428212851 is about 753.7371112923.

The spelling of 428212851 in words is "four hundred twenty-eight million, two hundred twelve thousand, eight hundred fifty-one".