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7124028 = 2231394271
BaseRepresentation
bin11011001011010000111100
3111101221022220
4123023100330
53310432103
6412405340
7114360522
oct33132074
914357286
107124028
11402642a
122476850
131625802
14d36312
1595ac53
hex6cb43c

7124028 has 24 divisors (see below), whose sum is σ = 16746240. Its totient is φ = 2357040.

The previous prime is 7124023. The next prime is 7124041. The reversal of 7124028 is 8204217.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7123989 and 7124007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7124023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (697760).

Almost surely, 27124028 is an apocalyptic number.

It is an amenable number.

7124028 is an abundant number, since it is smaller than the sum of its proper divisors (9622212).

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

7124028 is a wasteful number, since it uses less digits than its factorization.

7124028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417 (or 4415 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 7124028 is about 2669.0874845160. The cubic root of 7124028 is about 192.4163058896.

The spelling of 7124028 in words is "seven million, one hundred twenty-four thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 139 278 417 556 834 1668 4271 8542 12813 17084 25626 51252 593669 1187338 1781007 2374676 3562014 7124028