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70420412 = 22434011021
BaseRepresentation
bin1000011001010…
…00011110111100
311220111201122102
410030220132330
5121011423122
610553204232
71513364216
oct414503674
9156451572
1070420412
1136828997
121b700678
1311787caa
1494d15b6
1562b0492
hex43287bc

70420412 has 24 divisors (see below), whose sum is σ = 126539952. Its totient is φ = 34272000.

The previous prime is 70420397. The next prime is 70420421. The reversal of 70420412 is 21402407.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 68462 + ... + 69482.

It is an arithmetic number, because the mean of its divisors is an integer number (5272498).

Almost surely, 270420412 is an apocalyptic number.

It is an amenable number.

70420412 is a deficient number, since it is larger than the sum of its proper divisors (56119540).

70420412 is a wasteful number, since it uses less digits than its factorization.

70420412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 70420412 is about 8391.6870771020. The cubic root of 70420412 is about 412.9519493371.

Adding to 70420412 its reverse (21402407), we get a palindrome (91822819).

The spelling of 70420412 in words is "seventy million, four hundred twenty thousand, four hundred twelve".

Divisors: 1 2 4 43 86 172 401 802 1021 1604 2042 4084 17243 34486 43903 68972 87806 175612 409421 818842 1637684 17605103 35210206 70420412