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253051078 = 2731976011
BaseRepresentation
bin11110001010101…
…00000011000110
3122122011022211011
433011110003012
51004240113303
641035432434
76161620150
oct1705240306
9578138734
10253051078
1111a928025
12708b571a
1340570387
1425871ad0
151733816d
hexf1540c6

253051078 has 32 divisors (see below), whose sum is σ = 452487168. Its totient is φ = 103852800.

The previous prime is 253051067. The next prime is 253051081. The reversal of 253051078 is 870150352.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39093 + ... + 45103.

It is an arithmetic number, because the mean of its divisors is an integer number (14140224).

Almost surely, 2253051078 is an apocalyptic number.

253051078 is a deficient number, since it is larger than the sum of its proper divisors (199436090).

253051078 is a wasteful number, since it uses less digits than its factorization.

253051078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 253051078 is about 15907.5792627288. The cubic root of 253051078 is about 632.5129144827.

The spelling of 253051078 in words is "two hundred fifty-three million, fifty-one thousand, seventy-eight".

Divisors: 1 2 7 14 31 62 97 194 217 434 679 1358 3007 6011 6014 12022 21049 42077 42098 84154 186341 372682 583067 1166134 1304387 2608774 4081469 8162938 18075077 36150154 126525539 253051078