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250245420 = 22354170757
BaseRepresentation
bin11101110101001…
…11000100101100
3122102212210011220
432322213010230
51003030323140
640455343340
76126023325
oct1672470454
9572783156
10250245420
111192910a7
126b981b50
133caca319
142534144c
1516e81bd0
hexeea712c

250245420 has 24 divisors (see below), whose sum is σ = 700687344. Its totient is φ = 66732096.

The previous prime is 250245419. The next prime is 250245421. The reversal of 250245420 is 24542052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (250245419) and next prime (250245421).

It is not an unprimeable number, because it can be changed into a prime (250245421) 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, 2085319 + ... + 2085438.

It is an arithmetic number, because the mean of its divisors is an integer number (29195306).

Almost surely, 2250245420 is an apocalyptic number.

250245420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250245420 is an abundant number, since it is smaller than the sum of its proper divisors (450441924).

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

250245420 is a wasteful number, since it uses less digits than its factorization.

250245420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170769 (or 4170767 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 250245420 is about 15819.1472589391. The cubic root of 250245420 is about 630.1665974124.

Adding to 250245420 its reverse (24542052), we get a palindrome (274787472).

The spelling of 250245420 in words is "two hundred fifty million, two hundred forty-five thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 4170757 8341514 12512271 16683028 20853785 25024542 41707570 50049084 62561355 83415140 125122710 250245420