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149720629 = 831803863
BaseRepresentation
bin10001110110010…
…00111000110101
3101102201121002111
420323020320311
5301312030004
622505011021
73465414202
oct1073107065
9342647074
10149720629
1177571363
1242183a71
13250319b6
1415c54ca9
15d226a04
hex8ec8e35

149720629 has 4 divisors (see below), whose sum is σ = 151524576. Its totient is φ = 147916684.

The previous prime is 149720609. The next prime is 149720633. The reversal of 149720629 is 926027941.

149720629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149720629 - 211 = 149718581 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149720591 and 149720600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149720609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901849 + ... + 902014.

It is an arithmetic number, because the mean of its divisors is an integer number (37881144).

Almost surely, 2149720629 is an apocalyptic number.

It is an amenable number.

149720629 is a deficient number, since it is larger than the sum of its proper divisors (1803947).

149720629 is an equidigital number, since it uses as much as digits as its factorization.

149720629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803946.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 149720629 is about 12236.0381251449. The cubic root of 149720629 is about 530.9992173847. Note that the first 3 decimals are identical.

The spelling of 149720629 in words is "one hundred forty-nine million, seven hundred twenty thousand, six hundred twenty-nine".

Divisors: 1 83 1803863 149720629