Search a number
-
+
145260871 = 7191935659
BaseRepresentation
bin10001010100010…
…00000101000111
3101010100000110021
420222020011013
5244141321441
622225240011
73412461040
oct1052100507
9333300407
10145260871
1174aa5708
1240793007
132412caa2
14154138c7
15cb453d1
hex8a88147

145260871 has 16 divisors (see below), whose sum is σ = 175686400. Its totient is φ = 117324288.

The previous prime is 145260851. The next prime is 145260887. The reversal of 145260871 is 178062541.

It is a cyclic number.

It is not a de Polignac number, because 145260871 - 25 = 145260839 is a prime.

It is a super-2 number, since 2×1452608712 = 42201441287357282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145260811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22840 + ... + 28498.

It is an arithmetic number, because the mean of its divisors is an integer number (10980400).

Almost surely, 2145260871 is an apocalyptic number.

145260871 is a deficient number, since it is larger than the sum of its proper divisors (30425529).

145260871 is a wasteful number, since it uses less digits than its factorization.

145260871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 145260871 is about 12052.4217898313. The cubic root of 145260871 is about 525.6736579720.

The spelling of 145260871 in words is "one hundred forty-five million, two hundred sixty thousand, eight hundred seventy-one".

Divisors: 1 7 19 133 193 1351 3667 5659 25669 39613 107521 752647 1092187 7645309 20751553 145260871