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69972590 = 256997259
BaseRepresentation
bin1000010101110…
…11001001101110
311212122222100102
410022323021232
5120403110330
610535431102
71506520502
oct412731156
9155588312
1069972590
1136552496
121b525492
131165c1cc
149416302
156222945
hex42bb26e

69972590 has 8 divisors (see below), whose sum is σ = 125950680. Its totient is φ = 27989032.

The previous prime is 69972583. The next prime is 69972593. The reversal of 69972590 is 9527996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69972593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3498620 + ... + 3498639.

It is an arithmetic number, because the mean of its divisors is an integer number (15743835).

Almost surely, 269972590 is an apocalyptic number.

69972590 is a deficient number, since it is larger than the sum of its proper divisors (55978090).

69972590 is a wasteful number, since it uses less digits than its factorization.

69972590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6997266.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 69972590 is about 8364.9620441458. The cubic root of 69972590 is about 412.0747303724.

The spelling of 69972590 in words is "sixty-nine million, nine hundred seventy-two thousand, five hundred ninety".

Divisors: 1 2 5 10 6997259 13994518 34986295 69972590