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70932990 = 2352364433
BaseRepresentation
bin1000011101001…
…01100111111110
311221110202202210
410032211213332
5121124323430
611012201250
71520630502
oct416454776
9157422683
1070932990
1137049007
121b909226
13119073ab
1495c6302
1563622b0
hex43a59fe

70932990 has 16 divisors (see below), whose sum is σ = 170239248. Its totient is φ = 18915456.

The previous prime is 70932973. The next prime is 70932997. The reversal of 70932990 is 9923907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70932997) 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, 1182187 + ... + 1182246.

It is an arithmetic number, because the mean of its divisors is an integer number (10639953).

Almost surely, 270932990 is an apocalyptic number.

70932990 is an abundant number, since it is smaller than the sum of its proper divisors (99306258).

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

70932990 is a wasteful number, since it uses less digits than its factorization.

70932990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364443.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 70932990 is about 8422.1725225740. The cubic root of 70932990 is about 413.9514634224.

The spelling of 70932990 in words is "seventy million, nine hundred thirty-two thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 2364433 4728866 7093299 11822165 14186598 23644330 35466495 70932990