40632220 has 12 divisors (see below), whose sum is σ = 85327704. Its totient is φ = 16252880.

The previous prime is 40632209. The next prime is 40632223. The reversal of 40632220 is 2223604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40632223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015786 + ... + 1015825.

It is an arithmetic number, because the mean of its divisors is an integer number (7110642).

Almost surely, 2^40632220 is an apocalyptic number.

It is an amenable number.

40632220 is an abundant number, since it is smaller than the sum of its proper divisors (44695484).

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

40632220 is a wasteful number, since it uses less digits than its factorization.

40632220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031620 (or 2031618 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40632220 is about 6374.3407502266. The cubic root of 40632220 is about 343.7875806847.

Adding to 40632220 its reverse (2223604), we get a palindrome (42855824).

The spelling of 40632220 in words is "forty million, six hundred thirty-two thousand, two hundred twenty".