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38680025 = 521547201
BaseRepresentation
bin1001001110001…
…1010111011001
32200210011000112
42103203113121
534400230100
63501014105
7646526516
oct223432731
980704015
1038680025
111a91996a
1210b54335
138023ab7
1451cc30d
1535e0b35
hex24e35d9

38680025 has 6 divisors (see below), whose sum is σ = 47963262. Its totient is φ = 30944000.

The previous prime is 38680021. The next prime is 38680073. The reversal of 38680025 is 52008683.

It can be written as a sum of positive squares in 3 ways, for example, as 2835856 + 35844169 = 1684^2 + 5987^2 .

It is not a de Polignac number, because 38680025 - 22 = 38680021 is a prime.

It is a super-2 number, since 2×386800252 = 2992288668001250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38679973 and 38680000.

It is not an unprimeable number, because it can be changed into a prime (38680021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 773576 + ... + 773625.

It is an arithmetic number, because the mean of its divisors is an integer number (7993877).

Almost surely, 238680025 is an apocalyptic number.

It is an amenable number.

38680025 is a deficient number, since it is larger than the sum of its proper divisors (9283237).

38680025 is a wasteful number, since it uses less digits than its factorization.

38680025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547211 (or 1547206 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 38680025 is about 6219.3267320507. The cubic root of 38680025 is about 338.1911579312.

The spelling of 38680025 in words is "thirty-eight million, six hundred eighty thousand, twenty-five".

Divisors: 1 5 25 1547201 7736005 38680025