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128852052 = 22371533953
BaseRepresentation
bin1111010111000…
…10000001010100
322222110100210020
413223202001110
5230441231202
620441425140
73123136650
oct753420124
9288410706
10128852052
11668084aa
123719b1b0
1320906124
1413181a60
15b4a35bc
hex7ae2054

128852052 has 24 divisors (see below), whose sum is σ = 343605696. Its totient is φ = 36814848.

The previous prime is 128852039. The next prime is 128852077. The reversal of 128852052 is 250258821.

It is a super-2 number, since 2×1288520522 = 33205702609221408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766893 + ... + 767060.

It is an arithmetic number, because the mean of its divisors is an integer number (14316904).

Almost surely, 2128852052 is an apocalyptic number.

128852052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128852052 is an abundant number, since it is smaller than the sum of its proper divisors (214753644).

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

128852052 is a wasteful number, since it uses less digits than its factorization.

128852052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533967 (or 1533965 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 128852052 is about 11351.3017755674. The cubic root of 128852052 is about 505.0841960064.

The spelling of 128852052 in words is "one hundred twenty-eight million, eight hundred fifty-two thousand, fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 1533953 3067906 4601859 6135812 9203718 10737671 18407436 21475342 32213013 42950684 64426026 128852052