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70025144 = 2371250449
BaseRepresentation
bin1000010110001…
…11111110111000
311212202122102212
410023013332320
5120411301034
610540514252
71510126640
oct413077670
9155678385
1070025144
1136588a22
121b54b988
131167a0c7
14942b520
1562332ce
hex42c7fb8

70025144 has 16 divisors (see below), whose sum is σ = 150054000. Its totient is φ = 30010752.

The previous prime is 70025143. The next prime is 70025167. The reversal of 70025144 is 44152007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70025141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625169 + ... + 625280.

It is an arithmetic number, because the mean of its divisors is an integer number (9378375).

Almost surely, 270025144 is an apocalyptic number.

It is an amenable number.

70025144 is an abundant number, since it is smaller than the sum of its proper divisors (80028856).

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

70025144 is a wasteful number, since it uses less digits than its factorization.

70025144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250462 (or 1250458 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 70025144 is about 8368.1027718354. The cubic root of 70025144 is about 412.1778695964.

The spelling of 70025144 in words is "seventy million, twenty-five thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 28 56 1250449 2500898 5001796 8753143 10003592 17506286 35012572 70025144