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147807740 = 22517342719
BaseRepresentation
bin10001100111101…
…01110111111100
3101022010102002202
420303311313330
5300314321430
622400011032
73443226233
oct1063656774
9338112082
10147807740
1176485163
1241600a78
1324812102
14158b7b1a
15ce99d45
hex8cf5dfc

147807740 has 24 divisors (see below), whose sum is σ = 312197760. Its totient is φ = 58779968.

The previous prime is 147807739. The next prime is 147807749. The reversal of 147807740 is 47708741.

It is a junction number, because it is equal to n+sod(n) for n = 147807694 and 147807703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147807749) 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, 17900 + ... + 24819.

It is an arithmetic number, because the mean of its divisors is an integer number (13008240).

Almost surely, 2147807740 is an apocalyptic number.

147807740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147807740 is an abundant number, since it is smaller than the sum of its proper divisors (164390020).

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

147807740 is a wasteful number, since it uses less digits than its factorization.

147807740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42901 (or 42899 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 147807740 is about 12157.6206553750. The cubic root of 147807740 is about 528.7280999970.

The spelling of 147807740 in words is "one hundred forty-seven million, eight hundred seven thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 173 346 692 865 1730 3460 42719 85438 170876 213595 427190 854380 7390387 14780774 29561548 36951935 73903870 147807740