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115280157 = 3137280487
BaseRepresentation
bin1101101111100…
…00100100011101
322000220211122110
412313300210131
5214002431112
615234504233
72566602516
oct667604435
9260824573
10115280157
115a088763
1232735079
131ab63815
141144ba0d
15a1c213c
hex6df091d

115280157 has 8 divisors (see below), whose sum is σ = 154829376. Its totient is φ = 76292192.

The previous prime is 115280147. The next prime is 115280161. The reversal of 115280157 is 751082511.

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

It is a cyclic number.

It is not a de Polignac number, because 115280157 - 26 = 115280093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115280147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139833 + ... + 140654.

It is an arithmetic number, because the mean of its divisors is an integer number (19353672).

Almost surely, 2115280157 is an apocalyptic number.

It is an amenable number.

115280157 is a deficient number, since it is larger than the sum of its proper divisors (39549219).

115280157 is a wasteful number, since it uses less digits than its factorization.

115280157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280627.

The product of its (nonzero) digits is 2800, while the sum is 30.

The square root of 115280157 is about 10736.8597364406. The cubic root of 115280157 is about 486.6889878943.

The spelling of 115280157 in words is "one hundred fifteen million, two hundred eighty thousand, one hundred fifty-seven".

Divisors: 1 3 137 411 280487 841461 38426719 115280157