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48191380 = 2252409569
BaseRepresentation
bin1011011111010…
…1011110010100
310100200101010221
42313311132110
544314111010
64440524124
71123422436
oct267653624
9110611127
1048191380
1125225996
1214180644
139ca4113
146586656
15436ddda
hex2df5794

48191380 has 12 divisors (see below), whose sum is σ = 101201940. Its totient is φ = 19276544.

The previous prime is 48191333. The next prime is 48191383. The reversal of 48191380 is 8319184.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17322244 + 30869136 = 4162^2 + 5556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48191383) 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, 1204765 + ... + 1204804.

It is an arithmetic number, because the mean of its divisors is an integer number (8433495).

Almost surely, 248191380 is an apocalyptic number.

It is an amenable number.

48191380 is an abundant number, since it is smaller than the sum of its proper divisors (53010560).

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

48191380 is a wasteful number, since it uses less digits than its factorization.

48191380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409578 (or 2409576 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 48191380 is about 6942.0011524056. The cubic root of 48191380 is about 363.9064788118.

The spelling of 48191380 in words is "forty-eight million, one hundred ninety-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 2409569 4819138 9638276 12047845 24095690 48191380