Search a number
-
+
31048444 = 2272938237
BaseRepresentation
bin111011001110…
…0001011111100
32011102102110101
41312130023330
530422022234
63025250444
7524623150
oct166341374
964372411
1031048444
1116587179
12a493a24
13658127b
1441a3060
152ad4814
hex1d9c2fc

31048444 has 24 divisors (see below), whose sum is σ = 64239840. Its totient is φ = 12847296.

The previous prime is 31048429. The next prime is 31048481. The reversal of 31048444 is 44484013.

It is a super-3 number, since 3×310484443 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18307 + ... + 19930.

It is an arithmetic number, because the mean of its divisors is an integer number (2676660).

Almost surely, 231048444 is an apocalyptic number.

It is an amenable number.

31048444 is an abundant number, since it is smaller than the sum of its proper divisors (33191396).

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

31048444 is a wasteful number, since it uses less digits than its factorization.

31048444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38277 (or 38275 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 31048444 is about 5572.1130641795. The cubic root of 31048444 is about 314.3016156063.

The spelling of 31048444 in words is "thirty-one million, forty-eight thousand, four hundred forty-four".

Divisors: 1 2 4 7 14 28 29 58 116 203 406 812 38237 76474 152948 267659 535318 1070636 1108873 2217746 4435492 7762111 15524222 31048444