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253753930 = 251953113223
BaseRepresentation
bin11110001111111…
…11101001001010
3122200111000221201
433013333221022
51004430111210
641102454414
76200605243
oct1707775112
9580430851
10253753930
111202680a1
1270b9440a
1340758271
14259b5cca
151742653a
hexf1ffa4a

253753930 has 64 divisors (see below), whose sum is σ = 496419840. Its totient is φ = 93090816.

The previous prime is 253753921. The next prime is 253753933. The reversal of 253753930 is 39357352.

253753930 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 253753930.

It is not an unprimeable number, because it can be changed into a prime (253753933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1137799 + ... + 1138021.

It is an arithmetic number, because the mean of its divisors is an integer number (7756560).

Almost surely, 2253753930 is an apocalyptic number.

253753930 is a deficient number, since it is larger than the sum of its proper divisors (242665910).

253753930 is a wasteful number, since it uses less digits than its factorization.

253753930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 85050, while the sum is 37.

The square root of 253753930 is about 15929.6556773836. The cubic root of 253753930 is about 633.0979768762.

The spelling of 253753930 in words is "two hundred fifty-three million, seven hundred fifty-three thousand, nine hundred thirty".

Divisors: 1 2 5 10 19 38 53 95 106 113 190 223 226 265 446 530 565 1007 1115 1130 2014 2147 2230 4237 4294 5035 5989 8474 10070 10735 11819 11978 21185 21470 23638 25199 29945 42370 50398 59095 59890 113791 118190 125995 224561 227582 251990 449122 478781 568955 957562 1122805 1137910 1335547 2245610 2393905 2671094 4787810 6677735 13355470 25375393 50750786 126876965 253753930