20402034 has 16 divisors (see below), whose sum is σ = 41201472. Its totient is φ = 6734448.

The previous prime is 20402021. The next prime is 20402087. The reversal of 20402034 is 43020402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15889 + ... + 17124.

It is an arithmetic number, because the mean of its divisors is an integer number (2575092).

Almost surely, 2^20402034 is an apocalyptic number.

20402034 is an abundant number, since it is smaller than the sum of its proper divisors (20799438).

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

20402034 is a wasteful number, since it uses less digits than its factorization.

20402034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33121.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20402034 is about 4516.8610782268. The cubic root of 20402034 is about 273.2485225009.

Adding to 20402034 its reverse (43020402), we get a palindrome (63422436).

The spelling of 20402034 in words is "twenty million, four hundred two thousand, thirty-four".