255403470 has 64 divisors (see below), whose sum is σ = 702245376. Its totient is φ = 58235520.

The previous prime is 255403469. The next prime is 255403487. The reversal of 255403470 is 74304552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101872 + ... + 104348.

It is an arithmetic number, because the mean of its divisors is an integer number (10972584).

Almost surely, 2^255403470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255403470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351122688).

255403470 is an abundant number, since it is smaller than the sum of its proper divisors (446841906).

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

255403470 is a wasteful number, since it uses less digits than its factorization.

255403470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 255403470 is about 15981.3475652086. The cubic root of 255403470 is about 634.4668432791.

The spelling of 255403470 in words is "two hundred fifty-five million, four hundred three thousand, four hundred seventy".