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70569740 = 2257149697
BaseRepresentation
bin1000011010011…
…00111100001100
311220210022111002
410031030330030
5121031212430
611000315432
71514555453
oct415147414
9156708432
1070569740
11369200aa
121b772b78
131180ac57
14952db9a
1562de845
hex434cf0c

70569740 has 24 divisors (see below), whose sum is σ = 150286752. Its totient is φ = 27829760.

The previous prime is 70569739. The next prime is 70569787. The reversal of 70569740 is 4796507.

70569740 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

70569740 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 70569694 and 70569703.

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, 23429 + ... + 26268.

It is an arithmetic number, because the mean of its divisors is an integer number (6261948).

Almost surely, 270569740 is an apocalyptic number.

It is an amenable number.

70569740 is an abundant number, since it is smaller than the sum of its proper divisors (79717012).

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

70569740 is a wasteful number, since it uses less digits than its factorization.

70569740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49777 (or 49775 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 70569740 is about 8400.5797418988. The cubic root of 70569740 is about 413.2436344262.

The spelling of 70569740 in words is "seventy million, five hundred sixty-nine thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 49697 99394 198788 248485 496970 993940 3528487 7056974 14113948 17642435 35284870 70569740