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78120482 = 2113550931
BaseRepresentation
bin1001010100000…
…00011000100010
312102222221011012
410222000120202
5124444323412
611430220522
71636004336
oct452003042
9172887135
1078120482
1140108090
12221b4742
1313252a4b
14a5377c6
156cd1c22
hex4a80622

78120482 has 8 divisors (see below), whose sum is σ = 127833552. Its totient is φ = 35509300.

The previous prime is 78120481. The next prime is 78120499. The reversal of 78120482 is 28402187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×781204822 = 12205619415824648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78120481) 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, 1775444 + ... + 1775487.

It is an arithmetic number, because the mean of its divisors is an integer number (15979194).

Almost surely, 278120482 is an apocalyptic number.

78120482 is a deficient number, since it is larger than the sum of its proper divisors (49713070).

78120482 is a wasteful number, since it uses less digits than its factorization.

78120482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550944.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 78120482 is about 8838.5791844617. The cubic root of 78120482 is about 427.4857457942.

The spelling of 78120482 in words is "seventy-eight million, one hundred twenty thousand, four hundred eighty-two".

Divisors: 1 2 11 22 3550931 7101862 39060241 78120482