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29190025 = 526119141
BaseRepresentation
bin110111101011…
…0011110001001
32000221000012001
41233112132021
524433040100
62521351001
7503053054
oct157263611
960830161
1029190025
1115527997
129938461
136080407
143c3ba9b
152868d6a
hex1bd6789

29190025 has 12 divisors (see below), whose sum is σ = 36790924. Its totient is φ = 22968000.

The previous prime is 29190001. The next prime is 29190041. The reversal of 29190025 is 52009192.

It can be written as a sum of positive squares in 6 ways, for example, as 4875264 + 24314761 = 2208^2 + 4931^2 .

It is not a de Polignac number, because 29190025 - 215 = 29157257 is a prime.

It is a super-4 number, since 4×291900254 (a number of 31 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29189975 and 29190002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8046 + ... + 11095.

Almost surely, 229190025 is an apocalyptic number.

29190025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29190025 is a deficient number, since it is larger than the sum of its proper divisors (7600899).

29190025 is a wasteful number, since it uses less digits than its factorization.

29190025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19212 (or 19207 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 29190025 is about 5402.7793773205. The cubic root of 29190025 is about 307.9012761964.

The spelling of 29190025 in words is "twenty-nine million, one hundred ninety thousand, twenty-five".

Divisors: 1 5 25 61 305 1525 19141 95705 478525 1167601 5838005 29190025