Search a number
-
+
2487438 = 232138191
BaseRepresentation
bin1001011111010010001110
311200101010100
421133102032
51114044223
6125151530
730100002
oct11372216
94611110
102487438
111449938
129bb5a6
13691275
1448a702
15342043
hex25f48e

2487438 has 12 divisors (see below), whose sum is σ = 5389488. Its totient is φ = 829140.

The previous prime is 2487431. The next prime is 2487439. The reversal of 2487438 is 8347842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2487431) 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, 69078 + ... + 69113.

It is an arithmetic number, because the mean of its divisors is an integer number (449124).

22487438 is an apocalyptic number.

2487438 is an abundant number, since it is smaller than the sum of its proper divisors (2902050).

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

2487438 is a wasteful number, since it uses less digits than its factorization.

2487438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138199 (or 138196 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 2487438 is about 1577.1613741149. The cubic root of 2487438 is about 135.4931755844.

The spelling of 2487438 in words is "two million, four hundred eighty-seven thousand, four hundred thirty-eight".

Divisors: 1 2 3 6 9 18 138191 276382 414573 829146 1243719 2487438