Search a number
-
+
7490631 = 39725741
BaseRepresentation
bin11100100100110001000111
3112002120012210
4130210301013
53404200011
6424314503
7120445401
oct34446107
915076183
107490631
114256905
122612a33
131723635
14dcdb71
159ce6a6
hex724c47

7490631 has 8 divisors (see below), whose sum is σ = 10090864. Its totient is φ = 4942080.

The previous prime is 7490629. The next prime is 7490647. The reversal of 7490631 is 1360947.

It is a happy number.

7490631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7490631 - 21 = 7490629 is a prime.

It is a super-2 number, since 2×74906312 = 112219105556322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7490611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12580 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (1261358).

Almost surely, 27490631 is an apocalyptic number.

7490631 is a deficient number, since it is larger than the sum of its proper divisors (2600233).

7490631 is a wasteful number, since it uses less digits than its factorization.

7490631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25841.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 7490631 is about 2736.9017154439. The cubic root of 7490631 is about 195.6618405508.

The spelling of 7490631 in words is "seven million, four hundred ninety thousand, six hundred thirty-one".

Divisors: 1 3 97 291 25741 77223 2496877 7490631