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70289274 = 23111064989
BaseRepresentation
bin1000011000010…
…00011101111010
311220021001202110
410030020131322
5120443224044
610550313150
71512306666
oct414103572
9156231673
1070289274
1136749410
121b6587b6
13117403b3
1494998a6
1562866b9
hex430877a

70289274 has 16 divisors (see below), whose sum is σ = 153358560. Its totient is φ = 21299760.

The previous prime is 70289273. The next prime is 70289279. The reversal of 70289274 is 47298207.

70289274 = 2082 + 2092 + ... + 6032.

It is not an unprimeable number, because it can be changed into a prime (70289273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532429 + ... + 532560.

It is an arithmetic number, because the mean of its divisors is an integer number (9584910).

Almost surely, 270289274 is an apocalyptic number.

70289274 is an abundant number, since it is smaller than the sum of its proper divisors (83069286).

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

70289274 is a wasteful number, since it uses less digits than its factorization.

70289274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065005.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 70289274 is about 8383.8698701733. The cubic root of 70289274 is about 412.6954548478.

The spelling of 70289274 in words is "seventy million, two hundred eighty-nine thousand, two hundred seventy-four".

Divisors: 1 2 3 6 11 22 33 66 1064989 2129978 3194967 6389934 11714879 23429758 35144637 70289274