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1401088 = 2813421
BaseRepresentation
bin101010110000100000000
32122011221011
411112010000
5324313323
650010304
714623543
oct5260400
92564834
101401088
11877727
12576994
133a0960
1428685a
151ca20d
hex156100

1401088 has 36 divisors (see below), whose sum is σ = 3018988. Its totient is φ = 645120.

The previous prime is 1401083. The next prime is 1401119. The reversal of 1401088 is 8801041.

It can be written as a sum of positive squares in 2 ways, for example, as 73984 + 1327104 = 272^2 + 1152^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3118 + ... + 3538.

21401088 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 1401088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509494).

1401088 is an abundant number, since it is smaller than the sum of its proper divisors (1617900).

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

1401088 is an equidigital number, since it uses as much as digits as its factorization.

1401088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1401088 is about 1183.6756312436. The cubic root of 1401088 is about 111.8978660750.

The spelling of 1401088 in words is "one million, four hundred one thousand, eighty-eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 208 256 416 421 832 842 1664 1684 3328 3368 5473 6736 10946 13472 21892 26944 43784 53888 87568 107776 175136 350272 700544 1401088