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61385600 = 275219183
BaseRepresentation
bin1110101000101…
…0101110000000
311021111201012202
43222022232000
5111203314400
610031412332
71343524523
oct352125600
9137451182
1061385600
1131717a01
12186840a8
13c943853
14821cbba
1555c84d5
hex3a8ab80

61385600 has 48 divisors (see below), whose sum is σ = 151649520. Its totient is φ = 24552960.

The previous prime is 61385591. The next prime is 61385603. The reversal of 61385600 is 658316.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61385603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6392 + ... + 12791.

It is an arithmetic number, because the mean of its divisors is an integer number (3159365).

Almost surely, 261385600 is an apocalyptic number.

It is an amenable number.

61385600 is an abundant number, since it is smaller than the sum of its proper divisors (90263920).

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

61385600 is a wasteful number, since it uses less digits than its factorization.

61385600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19207 (or 19190 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61385600 is about 7834.8962979736. The cubic root of 61385600 is about 394.4774374895.

The spelling of 61385600 in words is "sixty-one million, three hundred eighty-five thousand, six hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 320 400 640 800 1600 3200 19183 38366 76732 95915 153464 191830 306928 383660 479575 613856 767320 959150 1227712 1534640 1918300 2455424 3069280 3836600 6138560 7673200 12277120 15346400 30692800 61385600