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70200220 = 22517919609
BaseRepresentation
bin1000010111100…
…10101110011100
311220002112121011
410023302232130
5120432401340
610544345004
71511456236
oct413625634
9156075534
1070200220
1136698512
121b615164
131170b9bc
149475256
15626a0ea
hex42f2b9c

70200220 has 24 divisors (see below), whose sum is σ = 148251600. Its totient is φ = 27921792.

The previous prime is 70200197. The next prime is 70200253. The reversal of 70200220 is 2200207.

It is a self number, because there is not a number n which added to its sum of digits gives 70200220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6225 + ... + 13384.

It is an arithmetic number, because the mean of its divisors is an integer number (6177150).

Almost surely, 270200220 is an apocalyptic number.

It is an amenable number.

70200220 is an abundant number, since it is smaller than the sum of its proper divisors (78051380).

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

70200220 is a wasteful number, since it uses less digits than its factorization.

70200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19797 (or 19795 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 70200220 is about 8378.5571550238. The cubic root of 70200220 is about 412.5210910551.

Subtracting from 70200220 its sum of digits (13), we obtain a palindrome (70200207).

Adding to 70200220 its reverse (2200207), we get a palindrome (72400427).

The spelling of 70200220 in words is "seventy million, two hundred thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 179 358 716 895 1790 3580 19609 39218 78436 98045 196090 392180 3510011 7020022 14040044 17550055 35100110 70200220