201220440 has 32 divisors (see below), whose sum is σ = 603661680. Its totient is φ = 53658752.

The previous prime is 201220429. The next prime is 201220457. The reversal of 201220440 is 44022102.

201220440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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, 838299 + ... + 838538.

Almost surely, 2^201220440 is an apocalyptic number.

201220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220440 is an abundant number, since it is smaller than the sum of its proper divisors (402441240).

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

201220440 is a wasteful number, since it uses less digits than its factorization.

201220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676851 (or 1676847 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 201220440 is about 14185.2190677479. The cubic root of 201220440 is about 585.9906656327.

Adding to 201220440 its reverse (44022102), we get a palindrome (245242542).

The spelling of 201220440 in words is "two hundred one million, two hundred twenty thousand, four hundred forty".