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1944392 = 23172292
BaseRepresentation
bin111011010101101001000
310122210012112
413122231020
5444210032
6105401452
722345532
oct7325510
93583175
101944392
11110893a
12799288
13531038
14388852
152861b2
hex1dab48

1944392 has 36 divisors (see below), whose sum is σ = 4010955. Its totient is φ = 883456.

The previous prime is 1944389. The next prime is 1944401. The reversal of 1944392 is 2934491.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 1552516 + 391876 = 1246^2 + 626^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=986.

It is a Duffinian number.

Its product of digits (7776) is a multiple of the sum of its prime divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 67034 + ... + 67062.

21944392 is an apocalyptic number.

It is an amenable number.

1944392 is an abundant number, since it is smaller than the sum of its proper divisors (2066563).

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

1944392 is a wasteful number, since it uses less digits than its factorization.

1944392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 48 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 1944392 is about 1394.4145724999. The cubic root of 1944392 is about 124.8134176347.

Multiplying 1944392 by its sum of digits (32), we get a square (62220544 = 78882).

Subtracting 1944392 from its reverse (2934491), we obtain a palindrome (990099).

The spelling of 1944392 in words is "one million, nine hundred forty-four thousand, three hundred ninety-two".

Divisors: 1 2 4 8 17 29 34 58 68 116 136 232 289 493 578 841 986 1156 1682 1972 2312 3364 3944 6728 8381 14297 16762 28594 33524 57188 67048 114376 243049 486098 972196 1944392