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2887480 = 235371951
BaseRepresentation
bin1011000000111100111000
312102200212201
423000330320
51214344410
6141515544
733354211
oct13007470
95380781
102887480
1116a2452
12b72bb4
137a138b
14552408
153c083a
hex2c0f38

2887480 has 32 divisors (see below), whose sum is σ = 6675840. Its totient is φ = 1123200.

The previous prime is 2887463. The next prime is 2887481. The reversal of 2887480 is 847882.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 2455.

It is an arithmetic number, because the mean of its divisors is an integer number (208620).

22887480 is an apocalyptic number.

2887480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2887480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3337920).

2887480 is an abundant number, since it is smaller than the sum of its proper divisors (3788360).

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

2887480 is a wasteful number, since it uses less digits than its factorization.

2887480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 2887480 is about 1699.2586618876. The cubic root of 2887480 is about 142.3987995943.

The spelling of 2887480 in words is "two million, eight hundred eighty-seven thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 740 1480 1951 3902 7804 9755 15608 19510 39020 72187 78040 144374 288748 360935 577496 721870 1443740 2887480