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2530404 = 223270289
BaseRepresentation
bin1001101001110001100100
311202120001200
421221301210
51121433104
6130122500
730336162
oct11516144
94676050
102530404
111479148
12a20430
136a79a6
1449c232
1534eb39
hex269c64

2530404 has 18 divisors (see below), whose sum is σ = 6396390. Its totient is φ = 843456.

The previous prime is 2530403. The next prime is 2530427. The reversal of 2530404 is 4040352.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2528100 + 2304 = 1590^2 + 48^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2530403) 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, 35109 + ... + 35180.

It is an arithmetic number, because the mean of its divisors is an integer number (355355).

22530404 is an apocalyptic number.

It is an amenable number.

2530404 is an abundant number, since it is smaller than the sum of its proper divisors (3865986).

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

2530404 is a wasteful number, since it uses less digits than its factorization.

2530404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70299 (or 70294 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2530404 is about 1590.7243633012. The cubic root of 2530404 is about 136.2688597185.

Adding to 2530404 its reverse (4040352), we get a palindrome (6570756).

The spelling of 2530404 in words is "two million, five hundred thirty thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 36 70289 140578 210867 281156 421734 632601 843468 1265202 2530404