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7953428 = 227284051
BaseRepresentation
bin11110010101110000010100
3112222002001102
4132111300110
54014002203
6442245232
7124413560
oct36256024
915862042
107953428
11454258a
1227b6818
131856192
1410b06a0
15a71888
hex795c14

7953428 has 12 divisors (see below), whose sum is σ = 15906912. Its totient is φ = 3408600.

The previous prime is 7953427. The next prime is 7953487. The reversal of 7953428 is 8243597.

7953428 is an admirable number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7953391 and 7953400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7953427) 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, 141998 + ... + 142053.

It is an arithmetic number, because the mean of its divisors is an integer number (1325576).

Almost surely, 27953428 is an apocalyptic number.

It is an amenable number.

7953428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7953428 is a wasteful number, since it uses less digits than its factorization.

7953428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284062 (or 284060 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 7953428 is about 2820.1822636135. The cubic root of 7953428 is about 199.6111444468.

The spelling of 7953428 in words is "seven million, nine hundred fifty-three thousand, four hundred twenty-eight".

Divisors: 1 2 4 7 14 28 284051 568102 1136204 1988357 3976714 7953428