428972493 has 8 divisors (see below), whose sum is σ = 572803488. Its totient is φ = 285561584.

The previous prime is 428972491. The next prime is 428972527. The reversal of 428972493 is 394279824.

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

It is a cyclic number.

It is not a de Polignac number, because 428972493 - 2¹ = 428972491 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 102630 + ... + 106727.

It is an arithmetic number, because the mean of its divisors is an integer number (71600436).

Almost surely, 2^428972493 is an apocalyptic number.

It is an amenable number.

428972493 is a deficient number, since it is larger than the sum of its proper divisors (143830995).

428972493 is a wasteful number, since it uses less digits than its factorization.

428972493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210043.

The product of its digits is 870912, while the sum is 48.

The square root of 428972493 is about 20711.6511413262. The cubic root of 428972493 is about 754.1825534145.

The spelling of 428972493 in words is "four hundred twenty-eight million, nine hundred seventy-two thousand, four hundred ninety-three".