428253337 has 4 divisors (see below), whose sum is σ = 428340496. Its totient is φ = 428166180.

The previous prime is 428253317. The next prime is 428253361. The reversal of 428253337 is 733352824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428253337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428253296 and 428253305.

It is not an unprimeable number, because it can be changed into a prime (428253317) 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, 35739 + ... + 46192.

It is an arithmetic number, because the mean of its divisors is an integer number (107085124).

Almost surely, 2^428253337 is an apocalyptic number.

It is an amenable number.

428253337 is a deficient number, since it is larger than the sum of its proper divisors (87159).

428253337 is an equidigital number, since it uses as much as digits as its factorization.

428253337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87158.

The product of its digits is 120960, while the sum is 37.

The square root of 428253337 is about 20694.2827128654. The cubic root of 428253337 is about 753.7608649302.

The spelling of 428253337 in words is "four hundred twenty-eight million, two hundred fifty-three thousand, three hundred thirty-seven".