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8402940 = 2235571319
BaseRepresentation
bin100000000011…
…011111111100
3120210220200000
4200003133330
54122343230
6500034300
7131265240
oct40033774
916726600
108402940
11481a287
122992990
131982970
14118a420
15b0eb60
hex8037fc

8402940 has 288 divisors, whose sum is σ = 34245120. Its totient is φ = 1679616.

The previous prime is 8402917. The next prime is 8402951. The reversal of 8402940 is 492048.

8402940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 442251 + ... + 442269.

Almost surely, 28402940 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 8402940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17122560).

8402940 is an abundant number, since it is smaller than the sum of its proper divisors (25842180).

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

8402940 is a wasteful number, since it uses less digits than its factorization.

8402940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8402940 is about 2898.7825030519. The cubic root of 8402940 is about 203.3029845116.

Adding to 8402940 its reverse (492048), we get a palindrome (8894988).

The spelling of 8402940 in words is "eight million, four hundred two thousand, nine hundred forty".