255429720 has 512 divisors, whose sum is σ = 1103155200. Its totient is φ = 51093504.

The previous prime is 255429659. The next prime is 255429751. The reversal of 255429720 is 27924552.

It is a happy number.

255429720 is a `hidden beast` number, since 2 + 5 + 542 + 97 + 20 = 666.

255429720 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2260384 + ... + 2260496.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^255429720 is an apocalyptic number.

255429720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255429720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551577600).

255429720 is an abundant number, since it is smaller than the sum of its proper divisors (847725480).

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

255429720 is a wasteful number, since it uses less digits than its factorization.

255429720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 255429720 is about 15982.1688140252. The cubic root of 255429720 is about 634.4885790633.

The spelling of 255429720 in words is "two hundred fifty-five million, four hundred twenty-nine thousand, seven hundred twenty".