Search a number
-
+
8019956 = 227286427
BaseRepresentation
bin11110100101111111110100
3120002110022102
4132211333310
54023114311
6443521232
7125111540
oct36457764
916073272
108019956
11458856a
122829218
13187a549
1410caa20
15a8643b
hex7a5ff4

8019956 has 12 divisors (see below), whose sum is σ = 16039968. Its totient is φ = 3437112.

The previous prime is 8019953. The next prime is 8019959. The reversal of 8019956 is 6599108.

It is an interprime number because it is at equal distance from previous prime (8019953) and next prime (8019959).

8019956 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8019953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143186 + ... + 143241.

It is an arithmetic number, because the mean of its divisors is an integer number (1336664).

Almost surely, 28019956 is an apocalyptic number.

It is an amenable number.

8019956 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.

8019956 is a wasteful number, since it uses less digits than its factorization.

8019956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286438 (or 286436 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 8019956 is about 2831.9526832205. The cubic root of 8019956 is about 200.1661619129.

The spelling of 8019956 in words is "eight million, nineteen thousand, nine hundred fifty-six".

Divisors: 1 2 4 7 14 28 286427 572854 1145708 2004989 4009978 8019956