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70949508 = 22374717971
BaseRepresentation
bin1000011101010…
…01101010000100
311221111121102120
410032221222010
5121130341013
611012405540
71521026610
oct416515204
9157447376
1070949508
113705a463
121b9168b0
1311911a76
1495cc340
156367123
hex43a9a84

70949508 has 48 divisors (see below), whose sum is σ = 193234944. Its totient is φ = 19838880.

The previous prime is 70949497. The next prime is 70949509. The reversal of 70949508 is 80594907.

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

It is a self number, because there is not a number n which added to its sum of digits gives 70949508.

It is not an unprimeable number, because it can be changed into a prime (70949509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5038 + ... + 12933.

It is an arithmetic number, because the mean of its divisors is an integer number (4025728).

Almost surely, 270949508 is an apocalyptic number.

It is an amenable number.

70949508 is an abundant number, since it is smaller than the sum of its proper divisors (122285436).

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

70949508 is a wasteful number, since it uses less digits than its factorization.

70949508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18032 (or 18030 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 70949508 is about 8423.1530913311. The cubic root of 70949508 is about 413.9835928992.

The spelling of 70949508 in words is "seventy million, nine hundred forty-nine thousand, five hundred eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 47 84 94 141 188 282 329 564 658 987 1316 1974 3948 17971 35942 53913 71884 107826 125797 215652 251594 377391 503188 754782 844637 1509564 1689274 2533911 3378548 5067822 5912459 10135644 11824918 17737377 23649836 35474754 70949508