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1440061 = 7229389
BaseRepresentation
bin101011111100100111101
32201011101121
411133210331
5332040221
650510541
715145300
oct5374475
92634347
101440061
118a3a37
12595451
133b560c
14296b37
151d6a41
hex15f93d

1440061 has 6 divisors (see below), whose sum is σ = 1675230. Its totient is φ = 1234296.

The previous prime is 1440037. The next prime is 1440079. The reversal of 1440061 is 1600441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 337561 = 1050^2 + 581^2 .

It is not a de Polignac number, because 1440061 - 29 = 1439549 is a prime.

It is a Duffinian number.

1440061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14646 + ... + 14743.

It is an arithmetic number, because the mean of its divisors is an integer number (279205).

21440061 is an apocalyptic number.

It is an amenable number.

1440061 is a deficient number, since it is larger than the sum of its proper divisors (235169).

1440061 is an equidigital number, since it uses as much as digits as its factorization.

1440061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29403 (or 29396 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1440061 is about 1200.0254163975. The cubic root of 1440061 is about 112.9259179765.

The spelling of 1440061 in words is "one million, four hundred forty thousand, sixty-one".

Divisors: 1 7 49 29389 205723 1440061