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4640129 = 13356933
BaseRepresentation
bin10001101100110110000001
322201202001122
4101230312001
52141441004
6243242025
754304034
oct21546601
98652048
104640129
11268a21a
121679315
13c66050
1488b01b
15619cbe
hex46cd81

4640129 has 4 divisors (see below), whose sum is σ = 4997076. Its totient is φ = 4283184.

The previous prime is 4640117. The next prime is 4640131. The reversal of 4640129 is 9210464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 547600 + 4092529 = 740^2 + 2023^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640129 - 24 = 4640113 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4640098 and 4640107.

It is not an unprimeable number, because it can be changed into a prime (4640159) 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, 178454 + ... + 178479.

It is an arithmetic number, because the mean of its divisors is an integer number (1249269).

Almost surely, 24640129 is an apocalyptic number.

It is an amenable number.

4640129 is a deficient number, since it is larger than the sum of its proper divisors (356947).

4640129 is a wasteful number, since it uses less digits than its factorization.

4640129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356946.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4640129 is about 2154.0958660190. The cubic root of 4640129 is about 166.7925639864.

The spelling of 4640129 in words is "four million, six hundred forty thousand, one hundred twenty-nine".

Divisors: 1 13 356933 4640129