40420480 has 64 divisors (see below), whose sum is σ = 97546680. Its totient is φ = 16015360.

The previous prime is 40420477. The next prime is 40420481. The reversal of 40420480 is 8402404.

It can be written as a sum of positive squares in 4 ways, for example, as 30735936 + 9684544 = 5544^2 + 3112^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (40420481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87450 + ... + 87910.

Almost surely, 2^40420480 is an apocalyptic number.

40420480 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 40420480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48773340).

40420480 is an abundant number, since it is smaller than the sum of its proper divisors (57126200).

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

40420480 is a wasteful number, since it uses less digits than its factorization.

40420480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 40420480 is about 6357.7102796526. The cubic root of 40420480 is about 343.1893658081.

Adding to 40420480 its reverse (8402404), we get a palindrome (48822884).

The spelling of 40420480 in words is "forty million, four hundred twenty thousand, four hundred eighty".