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245504940 = 22354091749
BaseRepresentation
bin11101010001000…
…01101110101100
3122002221221110120
432220201232230
51000322124230
640210004540
76040520562
oct1650415654
9562857416
10245504940
1111664354a
126a276750
133bb2a6c5
1424869a32
1516847310
hexea21bac

245504940 has 24 divisors (see below), whose sum is σ = 687414000. Its totient is φ = 65467968.

The previous prime is 245504933. The next prime is 245504969. The reversal of 245504940 is 49405542.

245504940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2045815 + ... + 2045934.

It is an arithmetic number, because the mean of its divisors is an integer number (28642250).

Almost surely, 2245504940 is an apocalyptic number.

245504940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245504940 is an abundant number, since it is smaller than the sum of its proper divisors (441909060).

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

245504940 is a wasteful number, since it uses less digits than its factorization.

245504940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091761 (or 4091759 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 245504940 is about 15668.5972569340. The cubic root of 245504940 is about 626.1620535381.

The spelling of 245504940 in words is "two hundred forty-five million, five hundred four thousand, nine hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 4091749 8183498 12275247 16366996 20458745 24550494 40917490 49100988 61376235 81834980 122752470 245504940