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10801812 = 2237235591
BaseRepresentation
bin101001001101…
…001010010100
3202022210022010
4221031022110
510231124222
61023304220
7160546110
oct51151224
922283263
1010801812
11610861a
12374b070
132312808
141612740
15e3580c
hexa4d294

10801812 has 48 divisors (see below), whose sum is σ = 30062592. Its totient is φ = 2951520.

The previous prime is 10801801. The next prime is 10801831. The reversal of 10801812 is 21810801.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 864 + ... + 4727.

It is an arithmetic number, because the mean of its divisors is an integer number (626304).

Almost surely, 210801812 is an apocalyptic number.

10801812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10801812 is an abundant number, since it is smaller than the sum of its proper divisors (19260780).

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

10801812 is a wasteful number, since it uses less digits than its factorization.

10801812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5626 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 10801812 is about 3286.6110204890. The cubic root of 10801812 is about 221.0542511995.

The spelling of 10801812 in words is "ten million, eight hundred one thousand, eight hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 23 28 42 46 69 84 92 138 161 276 322 483 644 966 1932 5591 11182 16773 22364 33546 39137 67092 78274 117411 128593 156548 234822 257186 385779 469644 514372 771558 900151 1543116 1800302 2700453 3600604 5400906 10801812