3540201220 has 24 divisors (see below), whose sum is σ = 7825708800. Its totient is φ = 1341549792.

The previous prime is 3540201157. The next prime is 3540201253. The reversal of 3540201220 is 221020453.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4657780 + ... + 4658539.

It is an arithmetic number, because the mean of its divisors is an integer number (326071200).

Almost surely, 2^3540201220 is an apocalyptic number.

It is an amenable number.

3540201220 is an abundant number, since it is smaller than the sum of its proper divisors (4285507580).

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

3540201220 is a wasteful number, since it uses less digits than its factorization.

3540201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316347 (or 9316345 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3540201220 is about 59499.5900826216. The cubic root of 3540201220 is about 1524.0854457320.

Adding to 3540201220 its reverse (221020453), we get a palindrome (3761221673).

The spelling of 3540201220 in words is "three billion, five hundred forty million, two hundred one thousand, two hundred twenty".