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20135502 = 2324872297
BaseRepresentation
bin100110011001…
…1111001001110
31101212222201100
41030303321032
520123314002
61555323530
7333102042
oct114637116
941788640
1020135502
1110403112
1268b05a6
13422ccca
142962022
151b7b11c
hex1333e4e

20135502 has 24 divisors (see below), whose sum is σ = 43735536. Its totient is φ = 6695136.

The previous prime is 20135501. The next prime is 20135509. The reversal of 20135502 is 20553102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7618 + ... + 9914.

It is an arithmetic number, because the mean of its divisors is an integer number (1822314).

Almost surely, 220135502 is an apocalyptic number.

20135502 is an abundant number, since it is smaller than the sum of its proper divisors (23600034).

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

20135502 is a wasteful number, since it uses less digits than its factorization.

20135502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20135502 is about 4487.2599657252. The cubic root of 20135502 is about 272.0533974607.

Adding to 20135502 its reverse (20553102), we get a palindrome (40688604).

The spelling of 20135502 in words is "twenty million, one hundred thirty-five thousand, five hundred two".

Divisors: 1 2 3 6 9 18 487 974 1461 2297 2922 4383 4594 6891 8766 13782 20673 41346 1118639 2237278 3355917 6711834 10067751 20135502