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1031420 = 225133967
BaseRepresentation
bin11111011110011111100
31221101211202
43323303330
5231001140
634035032
711524025
oct3736374
91841752
101031420
11644a15
12418a78
132a1610
141cbc4c
15155915
hexfbcfc

1031420 has 24 divisors (see below), whose sum is σ = 2333184. Its totient is φ = 380736.

The previous prime is 1031413. The next prime is 1031423. The reversal of 1031420 is 241301.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (97216).

21031420 is an apocalyptic number.

1031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031420 is an abundant number, since it is smaller than the sum of its proper divisors (1301764).

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

1031420 is a wasteful number, since it uses less digits than its factorization.

1031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989 (or 3987 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1031420 is about 1015.5884993441. The cubic root of 1031420 is about 101.0365518130.

Adding to 1031420 its reverse (241301), we get a palindrome (1272721).

The spelling of 1031420 in words is "one million, thirty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 3967 7934 15868 19835 39670 51571 79340 103142 206284 257855 515710 1031420