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1020230405 = 5691295291
BaseRepresentation
bin111100110011110…
…111101100000101
32122002202002000022
4330303313230011
54042134333110
6245123024525
734165546445
oct7463675405
92562662008
101020230405
11483991227
1224580b145
131334a143c
14996d6125
155e87a755
hex3ccf7b05

1020230405 has 8 divisors (see below), whose sum is σ = 1226052384. Its totient is φ = 815000400.

The previous prime is 1020230399. The next prime is 1020230417. The reversal of 1020230405 is 5040320201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020230405 - 224 = 1003453189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144191 + ... + 151100.

It is an arithmetic number, because the mean of its divisors is an integer number (153256548).

Almost surely, 21020230405 is an apocalyptic number.

It is an amenable number.

1020230405 is a deficient number, since it is larger than the sum of its proper divisors (205821979).

1020230405 is an equidigital number, since it uses as much as digits as its factorization.

1020230405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295987.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1020230405 is about 31941.0457718591. The cubic root of 1020230405 is about 1006.6984982674.

Adding to 1020230405 its reverse (5040320201), we get a palindrome (6060550606).

The spelling of 1020230405 in words is "one billion, twenty million, two hundred thirty thousand, four hundred five".

Divisors: 1 5 691 3455 295291 1476455 204046081 1020230405