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70430380 = 2253521519
BaseRepresentation
bin1000011001010…
…10111010101100
311220112020022121
410030222322230
5121012233010
610553322324
71513435246
oct414527254
9156466277
1070430380
1136835429
121b7063a4
131178c6a7
1494d5096
1562b33da
hex432aeac

70430380 has 12 divisors (see below), whose sum is σ = 147903840. Its totient is φ = 28172144.

The previous prime is 70430377. The next prime is 70430401. The reversal of 70430380 is 8303407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760740 + ... + 1760779.

It is an arithmetic number, because the mean of its divisors is an integer number (12325320).

Almost surely, 270430380 is an apocalyptic number.

It is an amenable number.

70430380 is an abundant number, since it is smaller than the sum of its proper divisors (77473460).

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

70430380 is a wasteful number, since it uses less digits than its factorization.

70430380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521528 (or 3521526 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 70430380 is about 8392.2809771837. The cubic root of 70430380 is about 412.9714328491.

Adding to 70430380 its reverse (8303407), we get a palindrome (78733787).

The spelling of 70430380 in words is "seventy million, four hundred thirty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 3521519 7043038 14086076 17607595 35215190 70430380