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85340644 = 223121492
BaseRepresentation
bin1010001011000…
…11000111100100
312221120202100121
411011203013210
5133321400034
612245051324
72054245354
oct505430744
9187522317
1085340644
1144199764
12246b6b44
13148b022c
14b496b64
15775b1b4
hex51631e4

85340644 has 27 divisors (see below), whose sum is σ = 155361801. Its totient is φ = 41016720.

The previous prime is 85340641. The next prime is 85340687. The reversal of 85340644 is 44604358.

The square root of 85340644 is 9238.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9998244 + 75342400 = 3162^2 + 8680^2 .

It is not an unprimeable number, because it can be changed into a prime (85340641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 572682 + ... + 572830.

Almost surely, 285340644 is an apocalyptic number.

85340644 is the 9238-th square number.

It is an amenable number.

85340644 is a deficient number, since it is larger than the sum of its proper divisors (70021157).

85340644 is a wasteful number, since it uses less digits than its factorization.

85340644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The cubic root of 85340644 is about 440.2695387069.

The spelling of 85340644 in words is "eighty-five million, three hundred forty thousand, six hundred forty-four".

Divisors: 1 2 4 31 62 124 149 298 596 961 1922 3844 4619 9238 18476 22201 44402 88804 143189 286378 572756 688231 1376462 2752924 21335161 42670322 85340644