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39130540 = 2251956527
BaseRepresentation
bin1001010101000…
…1010110101100
32201122001000021
42111101112230
540004134130
63514411524
7653414131
oct225212654
981561007
1039130540
11200a7399
1211130ba4
138150b87
1452a8588
15367e37a
hex25515ac

39130540 has 12 divisors (see below), whose sum is σ = 82174176. Its totient is φ = 15652208.

The previous prime is 39130537. The next prime is 39130543. The reversal of 39130540 is 4503193.

It is an interprime number because it is at equal distance from previous prime (39130537) and next prime (39130543).

It is not an unprimeable number, because it can be changed into a prime (39130543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978244 + ... + 978283.

It is an arithmetic number, because the mean of its divisors is an integer number (6847848).

Almost surely, 239130540 is an apocalyptic number.

It is an amenable number.

39130540 is an abundant number, since it is smaller than the sum of its proper divisors (43043636).

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

39130540 is a wasteful number, since it uses less digits than its factorization.

39130540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956536 (or 1956534 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 39130540 is about 6255.4408317880. The cubic root of 39130540 is about 339.4990893772.

The spelling of 39130540 in words is "thirty-nine million, one hundred thirty thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 1956527 3913054 7826108 9782635 19565270 39130540