Search a number
-
+
2190748 = 22778241
BaseRepresentation
bin1000010110110110011100
311010022010211
420112312130
51030100443
6114542204
724423010
oct10266634
94108124
102190748
111266a3a
12897964
135b9201
14410540
152d419d
hex216d9c

2190748 has 12 divisors (see below), whose sum is σ = 4381552. Its totient is φ = 938880.

The previous prime is 2190737. The next prime is 2190751. The reversal of 2190748 is 8470912.

2190748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2190748 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 39093 + ... + 39148.

22190748 is an apocalyptic number.

2190748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2190748 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.

2190748 is a wasteful number, since it uses less digits than its factorization.

2190748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78252 (or 78250 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2190748 is about 1480.1175628983. The cubic root of 2190748 is about 129.8765692341.

The spelling of 2190748 in words is "two million, one hundred ninety thousand, seven hundred forty-eight".

Divisors: 1 2 4 7 14 28 78241 156482 312964 547687 1095374 2190748