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57980706 = 2374313203
BaseRepresentation
bin1101110100101…
…1011100100010
311001002201120120
43131023130202
5104320340311
65430421110
71302553650
oct335133442
9131081516
1057980706
112a801843
1217501796
13c020b14
1479b3dd0
155154706
hex374b722

57980706 has 32 divisors (see below), whose sum is σ = 132876288. Its totient is φ = 16522320.

The previous prime is 57980701. The next prime is 57980711. The reversal of 57980706 is 60708975.

It is an interprime number because it is at equal distance from previous prime (57980701) and next prime (57980711).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (57980701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16501 + ... + 19703.

It is an arithmetic number, because the mean of its divisors is an integer number (4152384).

Almost surely, 257980706 is an apocalyptic number.

57980706 is an abundant number, since it is smaller than the sum of its proper divisors (74895582).

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

57980706 is a wasteful number, since it uses less digits than its factorization.

57980706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 57980706 is about 7614.5062873439. The cubic root of 57980706 is about 387.0447370646.

The spelling of 57980706 in words is "fifty-seven million, nine hundred eighty thousand, seven hundred six".

Divisors: 1 2 3 6 7 14 21 42 431 862 1293 2586 3017 3203 6034 6406 9051 9609 18102 19218 22421 44842 67263 134526 1380493 2760986 4141479 8282958 9663451 19326902 28990353 57980706