428350751 has 4 divisors (see below), whose sum is σ = 453547872. Its totient is φ = 403153632.

The previous prime is 428350711. The next prime is 428350753. The reversal of 428350751 is 157053824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428350751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428350753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12598535 + ... + 12598568.

It is an arithmetic number, because the mean of its divisors is an integer number (113386968).

Almost surely, 2^428350751 is an apocalyptic number.

428350751 is a deficient number, since it is larger than the sum of its proper divisors (25197121).

428350751 is a wasteful number, since it uses less digits than its factorization.

428350751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25197120.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 428350751 is about 20696.6362242757. The cubic root of 428350751 is about 753.8180127971.

The spelling of 428350751 in words is "four hundred twenty-eight million, three hundred fifty thousand, seven hundred fifty-one".