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7490947 = 13035749
BaseRepresentation
bin11100100100110110000011
3112002120122111
4130210312003
53404202242
6424320151
7120446332
oct34446603
915076574
107490947
114257072
122613057
131723819
14dcdd19
159ce817
hex724d83

7490947 has 4 divisors (see below), whose sum is σ = 7498000. Its totient is φ = 7483896.

The previous prime is 7490927. The next prime is 7490981.

7490947 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7490947 - 215 = 7458179 is a prime.

It is a super-2 number, since 2×74909472 = 112228573913618, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7490927) 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 3 ways as a sum of consecutive naturals, for example, 1572 + ... + 4177.

It is an arithmetic number, because the mean of its divisors is an integer number (1874500).

Almost surely, 27490947 is an apocalyptic number.

7490947 is a deficient number, since it is larger than the sum of its proper divisors (7053).

7490947 is a wasteful number, since it uses less digits than its factorization.

7490947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7490947 is about 2736.9594443470. The cubic root of 7490947 is about 195.6645919110.

The spelling of 7490947 in words is "seven million, four hundred ninety thousand, nine hundred forty-seven".

Divisors: 1 1303 5749 7490947