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53428 = 2219237
BaseRepresentation
bin1101000010110100
32201021211
431002310
53202203
61051204
7311524
oct150264
981254
1053428
1137161
1226b04
131b41b
1415684
1510c6d
hexd0b4

53428 has 18 divisors (see below), whose sum is σ = 101346. Its totient is φ = 24624.

The previous prime is 53419. The next prime is 53437. The reversal of 53428 is 82435.

It is an interprime number because it is at equal distance from previous prime (53419) and next prime (53437).

It can be written as a sum of positive squares in only one way, i.e., 51984 + 1444 = 228^2 + 38^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 53399 and 53408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1426 + ... + 1462.

253428 is an apocalyptic number.

It is an amenable number.

53428 is a deficient number, since it is larger than the sum of its proper divisors (47918).

53428 is a wasteful number, since it uses less digits than its factorization.

53428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 58 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 53428 is about 231.1449761513. The cubic root of 53428 is about 37.6636991771.

The spelling of 53428 in words is "fifty-three thousand, four hundred twenty-eight".

Divisors: 1 2 4 19 37 38 74 76 148 361 703 722 1406 1444 2812 13357 26714 53428