253842428 has 12 divisors (see below), whose sum is σ = 507684912. Its totient is φ = 108789600.

The previous prime is 253842427. The next prime is 253842443. The reversal of 253842428 is 824248352.

253842428 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 253842391 and 253842400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253842427) 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, 4532873 + ... + 4532928.

It is an arithmetic number, because the mean of its divisors is an integer number (42307076).

Almost surely, 2^253842428 is an apocalyptic number.

253842428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

253842428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253842428 is a wasteful number, since it uses less digits than its factorization.

253842428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9065812 (or 9065810 counting only the distinct ones).

The product of its digits is 122880, while the sum is 38.

The square root of 253842428 is about 15932.4332102790. The cubic root of 253842428 is about 633.1715670569.

The spelling of 253842428 in words is "two hundred fifty-three million, eight hundred forty-two thousand, four hundred twenty-eight".