20400162 has 16 divisors (see below), whose sum is σ = 41668992. Its totient is φ = 6655280.

The previous prime is 20400161. The next prime is 20400173. The reversal of 20400162 is 26100402.

It is not an unprimeable number, because it can be changed into a prime (20400161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35889 + ... + 36452.

It is an arithmetic number, because the mean of its divisors is an integer number (2604312).

Almost surely, 2^20400162 is an apocalyptic number.

20400162 is an abundant number, since it is smaller than the sum of its proper divisors (21268830).

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

20400162 is a wasteful number, since it uses less digits than its factorization.

20400162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72393.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20400162 is about 4516.6538499203. The cubic root of 20400162 is about 273.2401648884.

Adding to 20400162 its reverse (26100402), we get a palindrome (46500564).

The spelling of 20400162 in words is "twenty million, four hundred thousand, one hundred sixty-two".