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2115425240 = 235478311057
BaseRepresentation
bin111111000010110…
…1101001111011000
312110102112201212222
41332011231033120
513313022101430
6545524523212
7103264550345
oct17605551730
95412481788
102115425240
11996114325
124b0550508
1327935bc16
14160d437cc
15c5ab29e5
hex7e16d3d8

2115425240 has 32 divisors (see below), whose sum is σ = 4761132480. Its totient is φ = 845916672.

The previous prime is 2115425231. The next prime is 2115425251. The reversal of 2115425240 is 425245112.

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, 185792 + ... + 196848.

It is an arithmetic number, because the mean of its divisors is an integer number (148785390).

Almost surely, 22115425240 is an apocalyptic number.

2115425240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115425240 is an abundant number, since it is smaller than the sum of its proper divisors (2645707240).

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

2115425240 is a wasteful number, since it uses less digits than its factorization.

2115425240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851 (or 15847 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2115425240 is about 45993.7521844000. The cubic root of 2115425240 is about 1283.7069542770.

The spelling of 2115425240 in words is "two billion, one hundred fifteen million, four hundred twenty-five thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 4783 9566 11057 19132 22114 23915 38264 44228 47830 55285 88456 95660 110570 191320 221140 442280 52885631 105771262 211542524 264428155 423085048 528856310 1057712620 2115425240