428924493 has 24 divisors (see below), whose sum is σ = 662276160. Its totient is φ = 266840640.

The previous prime is 428924473. The next prime is 428924497. The reversal of 428924493 is 394429824.

It is a happy number.

It is not a de Polignac number, because 428924493 - 2¹² = 428920397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428924497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16783 + ... + 33756.

It is an arithmetic number, because the mean of its divisors is an integer number (27594840).

Almost surely, 2^428924493 is an apocalyptic number.

It is an amenable number.

428924493 is a deficient number, since it is larger than the sum of its proper divisors (233351667).

428924493 is a wasteful number, since it uses less digits than its factorization.

428924493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50609 (or 50606 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 428924493 is about 20710.4923408402. The cubic root of 428924493 is about 754.1544225410.

It can be divided in two parts, 4289 and 24493, that added together give a palindrome (28782).

The spelling of 428924493 in words is "four hundred twenty-eight million, nine hundred twenty-four thousand, four hundred ninety-three".