46215220 has 72 divisors (see below), whose sum is σ = 105805224. Its totient is φ = 16941312.

The previous prime is 46215217. The next prime is 46215223. The reversal of 46215220 is 2251264.

It is an interprime number because it is at equal distance from previous prime (46215217) and next prime (46215223).

It can be written as a sum of positive squares in 4 ways, for example, as 23290276 + 22924944 = 4826^2 + 4788^2 .

It is a junction number, because it is equal to n+sod(n) for n = 46215191 and 46215200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46215223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267054 + ... + 267226.

It is an arithmetic number, because the mean of its divisors is an integer number (1469517).

Almost surely, 2^46215220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 46215220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52902612).

46215220 is an abundant number, since it is smaller than the sum of its proper divisors (59590004).

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

46215220 is a wasteful number, since it uses less digits than its factorization.

46215220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 46215220 is about 6798.1776970009. The cubic root of 46215220 is about 358.8627175584.

Adding to 46215220 its reverse (2251264), we get a palindrome (48466484).

The spelling of 46215220 in words is "forty-six million, two hundred fifteen thousand, two hundred twenty".