Search a number
-
+
8013890 = 252334843
BaseRepresentation
bin11110100100100001000010
3120002010222202
4132210201002
54022421030
6443433202
7125055053
oct36444102
916063882
108013890
114583a55
122825802
131877861
1410c872a
15a84745
hex7a4842

8013890 has 16 divisors (see below), whose sum is σ = 15052608. Its totient is φ = 3066096.

The previous prime is 8013883. The next prime is 8013893. The reversal of 8013890 is 983108.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8013893) 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, 17192 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (940788).

Almost surely, 28013890 is an apocalyptic number.

8013890 is a deficient number, since it is larger than the sum of its proper divisors (7038718).

8013890 is a wasteful number, since it uses less digits than its factorization.

8013890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34873.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 8013890 is about 2830.8814881588. The cubic root of 8013890 is about 200.1156830742.

Adding to 8013890 its reverse (983108), we get a palindrome (8996998).

The spelling of 8013890 in words is "eight million, thirteen thousand, eight hundred ninety".

Divisors: 1 2 5 10 23 46 115 230 34843 69686 174215 348430 801389 1602778 4006945 8013890