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29690380 = 2256722157
BaseRepresentation
bin111000101000…
…0101000001100
32001212102112201
41301100220030
530100043010
62540211244
7510235606
oct161205014
961772481
1029690380
1115839905
129b39b24
1361c7095
143d2c176
15291723a
hex1c50a0c

29690380 has 24 divisors (see below), whose sum is σ = 63283248. Its totient is φ = 11698368.

The previous prime is 29690363. The next prime is 29690383. The reversal of 29690380 is 8309692.

It is a hoax number, since the sum of its digits (37) 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 (29690383) 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, 9739 + ... + 12418.

It is an arithmetic number, because the mean of its divisors is an integer number (2636802).

Almost surely, 229690380 is an apocalyptic number.

29690380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29690380 is an abundant number, since it is smaller than the sum of its proper divisors (33592868).

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

29690380 is a wasteful number, since it uses less digits than its factorization.

29690380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22233 (or 22231 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 29690380 is about 5448.8879599419. The cubic root of 29690380 is about 309.6505948824.

The spelling of 29690380 in words is "twenty-nine million, six hundred ninety thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 67 134 268 335 670 1340 22157 44314 88628 110785 221570 443140 1484519 2969038 5938076 7422595 14845190 29690380