428070253 has 4 divisors (see below), whose sum is σ = 460998748. Its totient is φ = 395141760.

The previous prime is 428070239. The next prime is 428070257. The reversal of 428070253 is 352070824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43204329 + 384865924 = 6573^2 + 19618^2 .

It is not a de Polignac number, because 428070253 - 2²¹ = 425973101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428070257) 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, 16464228 + ... + 16464253.

It is an arithmetic number, because the mean of its divisors is an integer number (115249687).

Almost surely, 2^428070253 is an apocalyptic number.

It is an amenable number.

428070253 is a deficient number, since it is larger than the sum of its proper divisors (32928495).

428070253 is a wasteful number, since it uses less digits than its factorization.

428070253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32928494.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 428070253 is about 20689.8586993725. The cubic root of 428070253 is about 753.6534353530.

The spelling of 428070253 in words is "four hundred twenty-eight million, seventy thousand, two hundred fifty-three".