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7490001 = 32496667
BaseRepresentation
bin11100100100100111010001
3112002112100110
4130210213101
53404140001
6424311533
7120443511
oct34444721
915075313
107490001
114256392
1226125a9
13172326c
14dcd841
159ce3d6
hex7249d1

7490001 has 4 divisors (see below), whose sum is σ = 9986672. Its totient is φ = 4993332.

The previous prime is 7489987. The next prime is 7490023. The reversal of 7490001 is 1000947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7490001 - 213 = 7481809 is a prime.

It is a super-2 number, since 2×74900012 = 112200229960002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7490001.

It is not an unprimeable number, because it can be changed into a prime (7490051) 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, 1248331 + ... + 1248336.

It is an arithmetic number, because the mean of its divisors is an integer number (2496668).

Almost surely, 27490001 is an apocalyptic number.

It is an amenable number.

7490001 is a deficient number, since it is larger than the sum of its proper divisors (2496671).

7490001 is a wasteful number, since it uses less digits than its factorization.

7490001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496670.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 7490001 is about 2736.7866193768. The cubic root of 7490001 is about 195.6563550132.

Adding to 7490001 its reverse (1000947), we get a palindrome (8490948).

The spelling of 7490001 in words is "seven million, four hundred ninety thousand, one".

Divisors: 1 3 2496667 7490001