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425278 = 2737821
BaseRepresentation
bin1100111110100111110
3210121101001
41213310332
5102102103
613040514
73420610
oct1476476
9717331
10425278
11270577
1218613a
1311b759
14b0db0
158601d
hex67d3e

425278 has 16 divisors (see below), whose sum is σ = 749664. Its totient is φ = 177120.

The previous prime is 425273. The next prime is 425279. The reversal of 425278 is 872524.

It is a super-2 number, since 2×4252782 = 361722754568, which contains 22 as substring.

It is a d-powerful number, because it can be written as 48 + 27 + 217 + 57 + 76 + 85 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425273) by changing a digit.

425278 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108 + ... + 928.

It is an arithmetic number, because the mean of its divisors is an integer number (46854).

2425278 is an apocalyptic number.

425278 is a deficient number, since it is larger than the sum of its proper divisors (324386).

425278 is a wasteful number, since it uses less digits than its factorization.

425278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 4480, while the sum is 28.

The square root of 425278 is about 652.1334219314. The cubic root of 425278 is about 75.2011194567.

It can be divided in two parts, 425 and 278, that added together give a triangular number (703 = T37).

The spelling of 425278 in words is "four hundred twenty-five thousand, two hundred seventy-eight".

Divisors: 1 2 7 14 37 74 259 518 821 1642 5747 11494 30377 60754 212639 425278