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401904 = 24322791
BaseRepresentation
bin1100010000111110000
3202102022100
41202013300
5100330104
612340400
73262506
oct1420760
9672270
10401904
11254a58
12174700
13110c19
14a6676
157e139
hex621f0

401904 has 30 divisors (see below), whose sum is σ = 1125176. Its totient is φ = 133920.

The previous prime is 401903. The next prime is 401909. The reversal of 401904 is 409104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1252 + ... + 1539.

2401904 is an apocalyptic number.

It is an amenable number.

401904 is an abundant number, since it is smaller than the sum of its proper divisors (723272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401904 is a wasteful number, since it uses less digits than its factorization.

401904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 401904 is about 633.9589892099. The cubic root of 401904 is about 73.7973515695.

The spelling of 401904 in words is "four hundred one thousand, nine hundred four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 2791 5582 8373 11164 16746 22328 25119 33492 44656 50238 66984 100476 133968 200952 401904