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1240340 = 22562017
BaseRepresentation
bin100101110110100010100
32100000102112
410232310110
5304142330
642330152
713354103
oct4566424
92300375
101240340
11777982
124b9958
1334573a
1424403a
15197795
hex12ed14

1240340 has 12 divisors (see below), whose sum is σ = 2604756. Its totient is φ = 496128.

The previous prime is 1240333. The next prime is 1240361. The reversal of 1240340 is 430421.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 264196 = 988^2 + 514^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30989 + ... + 31028.

It is an arithmetic number, because the mean of its divisors is an integer number (217063).

21240340 is an apocalyptic number.

1240340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240340 is an abundant number, since it is smaller than the sum of its proper divisors (1364416).

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

1240340 is a wasteful number, since it uses less digits than its factorization.

1240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62026 (or 62024 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1240340 is about 1113.7055266093. The cubic root of 1240340 is about 107.4435254114.

Adding to 1240340 its reverse (430421), we get a palindrome (1670761).

The spelling of 1240340 in words is "one million, two hundred forty thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 62017 124034 248068 310085 620170 1240340