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255201430 = 25116173521
BaseRepresentation
bin11110011011000…
…01000010010110
3122210012120112211
433031201002112
51010312421210
641153504034
76216114331
oct1715410226
9583176484
10255201430
11121066680
127157201a
1340b44083
1425c71618
151761038a
hexf361096

255201430 has 64 divisors (see below), whose sum is σ = 517306176. Its totient is φ = 89856000.

The previous prime is 255201409. The next prime is 255201437. The reversal of 255201430 is 34102552.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255201437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489570 + ... + 490090.

It is an arithmetic number, because the mean of its divisors is an integer number (8082909).

Almost surely, 2255201430 is an apocalyptic number.

255201430 is an abundant number, since it is smaller than the sum of its proper divisors (262104746).

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

255201430 is a wasteful number, since it uses less digits than its factorization.

255201430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 255201430 is about 15975.0251955983. The cubic root of 255201430 is about 634.2994982579.

Adding to 255201430 its reverse (34102552), we get a palindrome (289303982).

The spelling of 255201430 in words is "two hundred fifty-five million, two hundred one thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 55 61 73 110 122 146 305 365 521 610 671 730 803 1042 1342 1606 2605 3355 4015 4453 5210 5731 6710 8030 8906 11462 22265 28655 31781 38033 44530 48983 57310 63562 76066 97966 158905 190165 244915 317810 349591 380330 418363 489830 699182 836726 1747955 2091815 2320013 3495910 4183630 4640026 11600065 23200130 25520143 51040286 127600715 255201430