Search a number
-
+
1445409830 = 25456731649
BaseRepresentation
bin101011000100111…
…0011010000100110
310201201210102112102
41112021303100212
510430011103310
6355232052102
750550531554
oct12611632046
93651712472
101445409830
11681994887
12344094032
131a05ba7b7
14d9d72bd4
1586d648a5
hex56273426

1445409830 has 16 divisors (see below), whose sum is σ = 2602389600. Its totient is φ = 578019072.

The previous prime is 1445409829. The next prime is 1445409841. The reversal of 1445409830 is 389045441.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29846 + ... + 61494.

It is an arithmetic number, because the mean of its divisors is an integer number (162649350).

Almost surely, 21445409830 is an apocalyptic number.

1445409830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1445409830 is a deficient number, since it is larger than the sum of its proper divisors (1156979770).

1445409830 is a wasteful number, since it uses less digits than its factorization.

1445409830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36223.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1445409830 is about 38018.5458690887. The cubic root of 1445409830 is about 1130.6555910662.

The spelling of 1445409830 in words is "one billion, four hundred forty-five million, four hundred nine thousand, eight hundred thirty".

Divisors: 1 2 5 10 4567 9134 22835 31649 45670 63298 158245 316490 144540983 289081966 722704915 1445409830