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70990404 = 2235915867
BaseRepresentation
bin1000011101100…
…11101001000100
311221120200112020
410032303221010
5121133143104
611013323140
71521260052
oct416635104
9157520466
1070990404
1137088161
121b9364b0
1311927574
1495dd1d2
1563742d9
hex43b3a44

70990404 has 12 divisors (see below), whose sum is σ = 165644304. Its totient is φ = 23663464.

The previous prime is 70990363. The next prime is 70990411. The reversal of 70990404 is 40409907.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2957922 + ... + 2957945.

It is an arithmetic number, because the mean of its divisors is an integer number (13803692).

Almost surely, 270990404 is an apocalyptic number.

It is an amenable number.

70990404 is an abundant number, since it is smaller than the sum of its proper divisors (94653900).

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

70990404 is a wasteful number, since it uses less digits than its factorization.

70990404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5915874 (or 5915872 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 70990404 is about 8425.5803360955. The cubic root of 70990404 is about 414.0631190374.

The spelling of 70990404 in words is "seventy million, nine hundred ninety thousand, four hundred four".

Divisors: 1 2 3 4 6 12 5915867 11831734 17747601 23663468 35495202 70990404