263428055 has 8 divisors (see below), whose sum is σ = 344851344. Its totient is φ = 191584000.

The previous prime is 263428051. The next prime is 263428057. The reversal of 263428055 is 550824362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263428055 - 2² = 263428051 is a prime.

It is a super-2 number, since 2×263428055² = 138788680322166050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263428051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2394746 + ... + 2394855.

It is an arithmetic number, because the mean of its divisors is an integer number (43106418).

Almost surely, 2^263428055 is an apocalyptic number.

263428055 is a deficient number, since it is larger than the sum of its proper divisors (81423289).

263428055 is a wasteful number, since it uses less digits than its factorization.

263428055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789617.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 263428055 is about 16230.4668756016. The cubic root of 263428055 is about 641.0432650819.

The spelling of 263428055 in words is "two hundred sixty-three million, four hundred twenty-eight thousand, fifty-five".