428693253 has 16 divisors (see below), whose sum is σ = 591022656. Its totient is φ = 276210560.

The previous prime is 428693249. The next prime is 428693261. The reversal of 428693253 is 352396824.

It is a cyclic number.

It is not a de Polignac number, because 428693253 - 2² = 428693249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428693753) 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, 3126 + ... + 29447.

It is an arithmetic number, because the mean of its divisors is an integer number (36938916).

Almost surely, 2^428693253 is an apocalyptic number.

It is an amenable number.

428693253 is a deficient number, since it is larger than the sum of its proper divisors (162329403).

428693253 is a wasteful number, since it uses less digits than its factorization.

428693253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32724.

The product of its digits is 311040, while the sum is 42.

The square root of 428693253 is about 20704.9089106907. The cubic root of 428693253 is about 754.0188726405.

The spelling of 428693253 in words is "four hundred twenty-eight million, six hundred ninety-three thousand, two hundred fifty-three".