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122987070 = 23251366523
BaseRepresentation
bin1110101010010…
…10001000111110
322120102101112200
413111022020332
5222441041240
620112012330
73022241613
oct725121076
9276371480
10122987070
1163472008
12352310a6
131c63171b
141249650a
15abe5930
hex754a23e

122987070 has 24 divisors (see below), whose sum is σ = 319766616. Its totient is φ = 32796528.

The previous prime is 122987063. The next prime is 122987071. The reversal of 122987070 is 70789221.

It is a super-3 number, since 3×1229870703 (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122987071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683172 + ... + 683351.

It is an arithmetic number, because the mean of its divisors is an integer number (13323609).

Almost surely, 2122987070 is an apocalyptic number.

122987070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122987070 is an abundant number, since it is smaller than the sum of its proper divisors (196779546).

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

122987070 is a wasteful number, since it uses less digits than its factorization.

122987070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366536 (or 1366533 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 122987070 is about 11089.9535616701. The cubic root of 122987070 is about 497.3015563356.

The spelling of 122987070 in words is "one hundred twenty-two million, nine hundred eighty-seven thousand, seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1366523 2733046 4099569 6832615 8199138 12298707 13665230 20497845 24597414 40995690 61493535 122987070