[go: up one dir, main page]

Search a number
-
+
3640495 = 51938321
BaseRepresentation
bin1101111000110010101111
320211221211011
431320302233
51412443440
6210010051
742641455
oct15706257
96757734
103640495
112067181
121276927
139a6051
146aa9d5
154bd9ea
hex378caf

3640495 has 8 divisors (see below), whose sum is σ = 4598640. Its totient is φ = 2759040.

The previous prime is 3640493. The next prime is 3640519. The reversal of 3640495 is 5940463.

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

It is not a de Polignac number, because 3640495 - 21 = 3640493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640493) 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, 19066 + ... + 19255.

It is an arithmetic number, because the mean of its divisors is an integer number (574830).

Almost surely, 23640495 is an apocalyptic number.

3640495 is a deficient number, since it is larger than the sum of its proper divisors (958145).

3640495 is a wasteful number, since it uses less digits than its factorization.

3640495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38345.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3640495 is about 1908.0081236724. The cubic root of 3640495 is about 153.8344062504.

Subtracting from 3640495 its sum of digits (31), we obtain a square (3640464 = 19082).

Subtracting 3640495 from its reverse (5940463), we obtain a cube (2299968 = 1323).

The spelling of 3640495 in words is "three million, six hundred forty thousand, four hundred ninety-five".

Divisors: 1 5 19 95 38321 191605 728099 3640495