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BaseRepresentation
bin1101101011101111101
3211210001201
41231131331
5103322011
613335501
73545143
oct1553575
9753051
10448381
1128696a
12197591
1312911b
14b9593
158ccc1
hex6d77d

448381 has 4 divisors (see below), whose sum is σ = 472000. Its totient is φ = 424764.

The previous prime is 448379. The next prime is 448387. The reversal of 448381 is 183844.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 448381 - 21 = 448379 is a prime.

It is a super-2 number, since 2×4483812 = 402091042322, 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 (448387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11781 + ... + 11818.

It is an arithmetic number, because the mean of its divisors is an integer number (118000).

2448381 is an apocalyptic number.

448381 is the 424-th centered pentagonal number.

It is an amenable number.

448381 is a deficient number, since it is larger than the sum of its proper divisors (23619).

448381 is a wasteful number, since it uses less digits than its factorization.

448381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23618.

The product of its digits is 3072, while the sum is 28.

The square root of 448381 is about 669.6125745534. The cubic root of 448381 is about 76.5389324379.

The spelling of 448381 in words is "four hundred forty-eight thousand, three hundred eighty-one".

Divisors: 1 19 23599 448381