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8970940 = 225113337
BaseRepresentation
bin100010001110…
…001010111100
3121212202211001
4202032022330
54244032230
6520140044
7136152226
oct42161274
917782731
108970940
115078000
123007624
131b21364
141297416
15bc30ca
hex88e2bc

8970940 has 48 divisors (see below), whose sum is σ = 20782944. Its totient is φ = 3252480.

The previous prime is 8970919. The next prime is 8970953. The reversal of 8970940 is 490798.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8970940.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 26452 + ... + 26788.

It is an arithmetic number, because the mean of its divisors is an integer number (432978).

Almost surely, 28970940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8970940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10391472).

8970940 is an abundant number, since it is smaller than the sum of its proper divisors (11812004).

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

8970940 is a wasteful number, since it uses less digits than its factorization.

8970940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 8970940 is about 2995.1527506957. The cubic root of 8970940 is about 207.7842622608.

Subtracting from 8970940 its product of nonzero digits (18144), we obtain a triangular number (8952796 = T4231).

The spelling of 8970940 in words is "eight million, nine hundred seventy thousand, nine hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 121 220 242 337 484 605 674 1210 1331 1348 1685 2420 2662 3370 3707 5324 6655 6740 7414 13310 14828 18535 26620 37070 40777 74140 81554 163108 203885 407770 448547 815540 897094 1794188 2242735 4485470 8970940