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38235820 = 2257273113
BaseRepresentation
bin1001000111011…
…0111010101100
32122221120200111
42101312322230
534242021240
63443305404
7642666460
oct221667254
978846614
1038235820
111a646157
121097b264
137bc985c
1451144a0
1535541ea
hex2476eac

38235820 has 24 divisors (see below), whose sum is σ = 91766304. Its totient is φ = 13109376.

The previous prime is 38235811. The next prime is 38235823. The reversal of 38235820 is 2853283.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38235823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136417 + ... + 136696.

It is an arithmetic number, because the mean of its divisors is an integer number (3823596).

Almost surely, 238235820 is an apocalyptic number.

It is an amenable number.

38235820 is an abundant number, since it is smaller than the sum of its proper divisors (53530484).

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

38235820 is a wasteful number, since it uses less digits than its factorization.

38235820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273129 (or 273127 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 38235820 is about 6183.5119471058. The cubic root of 38235820 is about 336.8915640523.

The spelling of 38235820 in words is "thirty-eight million, two hundred thirty-five thousand, eight hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 273113 546226 1092452 1365565 1911791 2731130 3823582 5462260 7647164 9558955 19117910 38235820