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254797240 = 23517233697
BaseRepresentation
bin11110010111111…
…10010110111000
3122202110001002211
433023332112320
51010212002430
641141104504
76212512045
oct1713762670
9582401084
10254797240
1112090aa35
12713b8134
1340a320c9
1425ba81cc
151758072a
hexf2fe5b8

254797240 has 32 divisors (see below), whose sum is σ = 573781680. Its totient is φ = 101832192.

The previous prime is 254797237. The next prime is 254797271. The reversal of 254797240 is 42797452.

254797240 is digitally balanced in base 3, because in such base 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 (40).

It is a junction number, because it is equal to n+sod(n) for n = 254797193 and 254797202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67072 + ... + 70768.

Almost surely, 2254797240 is an apocalyptic number.

254797240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254797240 is an abundant number, since it is smaller than the sum of its proper divisors (318984440).

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

254797240 is a wasteful number, since it uses less digits than its factorization.

254797240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431 (or 5427 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 254797240 is about 15962.3694982919. The cubic root of 254797240 is about 633.9644518277.

The spelling of 254797240 in words is "two hundred fifty-four million, seven hundred ninety-seven thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 1723 3446 3697 6892 7394 8615 13784 14788 17230 18485 29576 34460 36970 68920 73940 147880 6369931 12739862 25479724 31849655 50959448 63699310 127398620 254797240