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29200420 = 2251460021
BaseRepresentation
bin110111101100…
…1000000100100
32000221112110001
41233121000210
524433403140
62521511044
7503125264
oct157310044
960845401
1029200420
1115534787
129942484
136085072
143c417a4
15286be9a
hex1bd9024

29200420 has 12 divisors (see below), whose sum is σ = 61320924. Its totient is φ = 11680160.

The previous prime is 29200411. The next prime is 29200421. The reversal of 29200420 is 2400292.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14500864 + 14699556 = 3808^2 + 3834^2 .

It is not an unprimeable number, because it can be changed into a prime (29200421) 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 3 ways as a sum of consecutive naturals, for example, 729991 + ... + 730030.

It is an arithmetic number, because the mean of its divisors is an integer number (5110077).

Almost surely, 229200420 is an apocalyptic number.

29200420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29200420 is an abundant number, since it is smaller than the sum of its proper divisors (32120504).

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

29200420 is a wasteful number, since it uses less digits than its factorization.

29200420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460030 (or 1460028 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 29200420 is about 5403.7412965463. The cubic root of 29200420 is about 307.9378212595.

The spelling of 29200420 in words is "twenty-nine million, two hundred thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1460021 2920042 5840084 7300105 14600210 29200420