46400020 has 12 divisors (see below), whose sum is σ = 97440084. Its totient is φ = 18560000.

The previous prime is 46400009. The next prime is 46400023. The reversal of 46400020 is 2000464.

It can be written as a sum of positive squares in 2 ways, for example, as 20958084 + 25441936 = 4578^2 + 5044^2 .

It is a junction number, because it is equal to n+sod(n) for n = 46399967 and 46400003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46400023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159981 + ... + 1160020.

It is an arithmetic number, because the mean of its divisors is an integer number (8120007).

Almost surely, 2^46400020 is an apocalyptic number.

It is an amenable number.

46400020 is an abundant number, since it is smaller than the sum of its proper divisors (51040064).

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

46400020 is a wasteful number, since it uses less digits than its factorization.

46400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320010 (or 2320008 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 46400020 is about 6811.7560144210. The cubic root of 46400020 is about 359.3404074580.

Adding to 46400020 its reverse (2000464), we get a palindrome (48400484).

The spelling of 46400020 in words is "forty-six million, four hundred thousand, twenty".