40227720 has 128 divisors (see below), whose sum is σ = 131725440. Its totient is φ = 9768960.

The previous prime is 40227709. The next prime is 40227749. The reversal of 40227720 is 2772204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166800 + ... + 167040.

It is an arithmetic number, because the mean of its divisors is an integer number (1029105).

Almost surely, 2^40227720 is an apocalyptic number.

40227720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40227720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65862720).

40227720 is an abundant number, since it is smaller than the sum of its proper divisors (91497720).

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

40227720 is a wasteful number, since it uses less digits than its factorization.

40227720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 40227720 is about 6342.5326171806. The cubic root of 40227720 is about 342.6429545146.

Adding to 40227720 its reverse (2772204), we get a palindrome (42999924).

The spelling of 40227720 in words is "forty million, two hundred twenty-seven thousand, seven hundred twenty".