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1393944 = 2332412
BaseRepresentation
bin101010100010100011000
32121211010120
411110110120
5324101234
645513240
714563656
oct5242430
92554116
101393944
11872322
12572820
1339a626
14283dd6
151c8049
hex154518

1393944 has 24 divisors (see below), whose sum is σ = 3499380. Its totient is φ = 462720.

The previous prime is 1393939. The next prime is 1393957. The reversal of 1393944 is 4493931.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5664 + ... + 5904.

21393944 is an apocalyptic number.

It is an amenable number.

1393944 is an abundant number, since it is smaller than the sum of its proper divisors (2105436).

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

1393944 is an equidigital number, since it uses as much as digits as its factorization.

1393944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 246 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 1393944 is about 1180.6540560215. The cubic root of 1393944 is about 111.7073567709.

It can be divided in two parts, 13939 and 44, that multiplied together give a palindrome (613316).

The spelling of 1393944 in words is "one million, three hundred ninety-three thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 8 12 24 241 482 723 964 1446 1928 2892 5784 58081 116162 174243 232324 348486 464648 696972 1393944