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70248855 = 359748281
BaseRepresentation
bin1000010111111…
…10100110010111
311220012000022110
410023332212113
5120440430410
610545402103
71512051105
oct413764627
9156160273
1070248855
1136721006
121b639333
1311727b91
149488c75
156279720
hex42fe997

70248855 has 16 divisors (see below), whose sum is σ = 113559264. Its totient is φ = 37079040.

The previous prime is 70248853. The next prime is 70248859. The reversal of 70248855 is 55884207.

It is not a de Polignac number, because 70248855 - 21 = 70248853 is a prime.

It is a super-2 number, since 2×702488552 = 9869803257622050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70248851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22686 + ... + 25595.

It is an arithmetic number, because the mean of its divisors is an integer number (7097454).

Almost surely, 270248855 is an apocalyptic number.

70248855 is a deficient number, since it is larger than the sum of its proper divisors (43310409).

70248855 is a wasteful number, since it uses less digits than its factorization.

70248855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48386.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 70248855 is about 8381.4590018684. The cubic root of 70248855 is about 412.6163344974.

The spelling of 70248855 in words is "seventy million, two hundred forty-eight thousand, eight hundred fifty-five".

Divisors: 1 3 5 15 97 291 485 1455 48281 144843 241405 724215 4683257 14049771 23416285 70248855