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80213974 = 240106987
BaseRepresentation
bin1001100011111…
…11011111010110
312120221021212221
410301333133112
5131013321344
611543132554
71662543661
oct461773726
9176837787
1080213974
1141307a45
1222a4415a
13138068b9
14a9206d8
157097184
hex4c7f7d6

80213974 has 4 divisors (see below), whose sum is σ = 120320964. Its totient is φ = 40106986.

The previous prime is 80213927. The next prime is 80213977. The reversal of 80213974 is 47931208.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80213977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20053492 + ... + 20053495.

It is an arithmetic number, because the mean of its divisors is an integer number (30080241).

Almost surely, 280213974 is an apocalyptic number.

80213974 is a deficient number, since it is larger than the sum of its proper divisors (40106990).

80213974 is a wasteful number, since it uses less digits than its factorization.

80213974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40106989.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 80213974 is about 8956.2254326251. The cubic root of 80213974 is about 431.2707568529.

The spelling of 80213974 in words is "eighty million, two hundred thirteen thousand, nine hundred seventy-four".

Divisors: 1 2 40106987 80213974