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129922038 = 23219379889
BaseRepresentation
bin1111011111001…
…11001111110110
3100001110201112100
413233213033312
5231230001123
620520402530
73135214311
oct757471766
9301421470
10129922038
1167379394
1237616446
1320bbc15c
141337d978
15b615643
hex7be73f6

129922038 has 24 divisors (see below), whose sum is σ = 296314200. Its totient is φ = 41027904.

The previous prime is 129922033. The next prime is 129922043. The reversal of 129922038 is 830229921.

It is an interprime number because it is at equal distance from previous prime (129922033) and next prime (129922043).

It is a junction number, because it is equal to n+sod(n) for n = 129921993 and 129922011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129922033) 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, 189603 + ... + 190286.

It is an arithmetic number, because the mean of its divisors is an integer number (12346425).

Almost surely, 2129922038 is an apocalyptic number.

129922038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

129922038 is an abundant number, since it is smaller than the sum of its proper divisors (166392162).

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

129922038 is a wasteful number, since it uses less digits than its factorization.

129922038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379916 (or 379913 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 129922038 is about 11398.3348783934. The cubic root of 129922038 is about 506.4784150786.

The spelling of 129922038 in words is "one hundred twenty-nine million, nine hundred twenty-two thousand, thirty-eight".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 379889 759778 1139667 2279334 3419001 6838002 7217891 14435782 21653673 43307346 64961019 129922038