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253423908 = 223222133181
BaseRepresentation
bin11110001101011…
…11000100100100
3122122212021020200
433012233010210
51004334031113
641051430500
76165032133
oct1706570444
9578767220
10253423908
11120062151
1270a55430
1340670c9a
142592b91a
hexf1af124

253423908 has 36 divisors (see below), whose sum is σ = 641090268. Its totient is φ = 84409920.

The previous prime is 253423873. The next prime is 253423943. The reversal of 253423908 is 809324352.

253423908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253423873) and next prime (253423943).

It can be written as a sum of positive squares in 2 ways, for example, as 150847524 + 102576384 = 12282^2 + 10128^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78078 + ... + 81258.

It is an arithmetic number, because the mean of its divisors is an integer number (17808063).

Almost surely, 2253423908 is an apocalyptic number.

It is an amenable number.

253423908 is an abundant number, since it is smaller than the sum of its proper divisors (387666360).

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

253423908 is a wasteful number, since it uses less digits than its factorization.

253423908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404 (or 5399 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 253423908 is about 15919.2935772917. The cubic root of 253423908 is about 632.8233973469.

The spelling of 253423908 in words is "two hundred fifty-three million, four hundred twenty-three thousand, nine hundred eight".