428972494 has 8 divisors (see below), whose sum is σ = 671435280. Its totient is φ = 205160736.

The previous prime is 428972491. The next prime is 428972527. The reversal of 428972494 is 494279824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428972491) 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, 4662699 + ... + 4662790.

It is an arithmetic number, because the mean of its divisors is an integer number (83929410).

Almost surely, 2^428972494 is an apocalyptic number.

428972494 is a deficient number, since it is larger than the sum of its proper divisors (242462786).

428972494 is a wasteful number, since it uses less digits than its factorization.

428972494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9325514.

The product of its digits is 1161216, while the sum is 49.

The square root of 428972494 is about 20711.6511654672. The cubic root of 428972494 is about 754.1825540006.

The spelling of 428972494 in words is "four hundred twenty-eight million, nine hundred seventy-two thousand, four hundred ninety-four".