20130802 has 4 divisors (see below), whose sum is σ = 30196206. Its totient is φ = 10065400.

The previous prime is 20130797. The next prime is 20130829. The reversal of 20130802 is 20803102.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 19722481 + 408321 = 4441^2 + 639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5032699 + ... + 5032702.

Almost surely, 2^20130802 is an apocalyptic number.

20130802 is a deficient number, since it is larger than the sum of its proper divisors (10065404).

20130802 is a wasteful number, since it uses less digits than its factorization.

20130802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065403.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20130802 is about 4486.7362302681. The cubic root of 20130802 is about 272.0322283756.

Adding to 20130802 its reverse (20803102), we get a palindrome (40933904).

The spelling of 20130802 in words is "twenty million, one hundred thirty thousand, eight hundred two".