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1241988 = 22311972
BaseRepresentation
bin100101111001110000100
32100002200120
410233032010
5304220423
642341540
713361646
oct4571604
92302616
101241988
11779140
124ba8b0
13346407
14244896
15197ee3
hex12f384

1241988 has 36 divisors (see below), whose sum is σ = 3194352. Its totient is φ = 372480.

The previous prime is 1241987. The next prime is 1242001. The reversal of 1241988 is 8891421.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1241987) 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, 12756 + ... + 12852.

It is an arithmetic number, because the mean of its divisors is an integer number (88732).

21241988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1241988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597176).

1241988 is an abundant number, since it is smaller than the sum of its proper divisors (1952364).

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

1241988 is a wasteful number, since it uses less digits than its factorization.

1241988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 113 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 1241988 is about 1114.4451534284. The cubic root of 1241988 is about 107.4910899412.

Multiplying 1241988 by its sum of digits (33), we get a square (40985604 = 64022).

1241988 divided by its sum of digits (33) gives a square (37636 = 1942).

It can be divided in two parts, 124 and 1988, that added together give a palindrome (2112).

The spelling of 1241988 in words is "one million, two hundred forty-one thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 97 132 194 291 388 582 1067 1164 2134 3201 4268 6402 9409 12804 18818 28227 37636 56454 103499 112908 206998 310497 413996 620994 1241988