40622240 has 48 divisors (see below), whose sum is σ = 96399072. Its totient is φ = 16176384.

The previous prime is 40622227. The next prime is 40622287. The reversal of 40622240 is 4222604.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 48707 + ... + 49533.

It is an arithmetic number, because the mean of its divisors is an integer number (2008314).

Almost surely, 2^40622240 is an apocalyptic number.

40622240 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 40622240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48199536).

40622240 is an abundant number, since it is smaller than the sum of its proper divisors (55776832).

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

40622240 is a wasteful number, since it uses less digits than its factorization.

40622240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40622240 is about 6373.5578761003. The cubic root of 40622240 is about 343.7594315869.

Adding to 40622240 its reverse (4222604), we get a palindrome (44844844).

The spelling of 40622240 in words is "forty million, six hundred twenty-two thousand, two hundred forty".