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7628141 = 25130391
BaseRepresentation
bin11101000110010101101101
3112100112211202
4131012111231
53423100031
6431255245
7121560323
oct35062555
915315752
107628141
114340154
12267a525
1317710c1
141027d13
15a0a2cb
hex74656d

7628141 has 4 divisors (see below), whose sum is σ = 7658784. Its totient is φ = 7597500.

The previous prime is 7628129. The next prime is 7628143. The reversal of 7628141 is 1418267.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-7628141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7628143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14945 + ... + 15446.

It is an arithmetic number, because the mean of its divisors is an integer number (1914696).

Almost surely, 27628141 is an apocalyptic number.

It is an amenable number.

7628141 is a deficient number, since it is larger than the sum of its proper divisors (30643).

7628141 is a wasteful number, since it uses less digits than its factorization.

7628141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30642.

The product of its digits is 2688, while the sum is 29.

The square root of 7628141 is about 2761.9089412940. The cubic root of 7628141 is about 196.8518817567.

The spelling of 7628141 in words is "seven million, six hundred twenty-eight thousand, one hundred forty-one".

Divisors: 1 251 30391 7628141