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252078 = 2342013
BaseRepresentation
bin111101100010101110
3110210210020
4331202232
531031303
65223010
72066631
oct754256
9423706
10252078
11162432
12101a66
138a978
1467c18
154ea53
hex3d8ae

252078 has 8 divisors (see below), whose sum is σ = 504168. Its totient is φ = 84024.

The previous prime is 252037. The next prime is 252079. The reversal of 252078 is 870252.

It is a sphenic number, since it is the product of 3 distinct primes.

252078 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21001 + ... + 21012.

It is an arithmetic number, because the mean of its divisors is an integer number (63021).

2252078 is an apocalyptic number.

252078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

252078 is a wasteful number, since it uses less digits than its factorization.

252078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42018.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 252078 is about 502.0736997693. The cubic root of 252078 is about 63.1701121833.

The spelling of 252078 in words is "two hundred fifty-two thousand, seventy-eight".

Divisors: 1 2 3 6 42013 84026 126039 252078