40218480 has 120 divisors (see below), whose sum is σ = 136897488. Its totient is φ = 10579968.

The previous prime is 40218469. The next prime is 40218491. The reversal of 40218480 is 8481204.

40218480 is a `hidden beast` number, since 402 + 184 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (40218469) and next prime (40218491).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×40218480² = 3235052267020800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59424 + ... + 60096.

Almost surely, 2^40218480 is an apocalyptic number.

40218480 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 40218480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68448744).

40218480 is an abundant number, since it is smaller than the sum of its proper divisors (96679008).

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

40218480 is a wasteful number, since it uses less digits than its factorization.

40218480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 40218480 is about 6341.8041597009. The cubic root of 40218480 is about 342.6167183493.

Adding to 40218480 its reverse (8481204), we get a palindrome (48699684).

The spelling of 40218480 in words is "forty million, two hundred eighteen thousand, four hundred eighty".