40621680 has 240 divisors, whose sum is σ = 155990016. Its totient is φ = 9377280.

The previous prime is 40621673. The next prime is 40621681. The reversal of 40621680 is 8612604.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40621681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182049 + ... + 182271.

Almost surely, 2^40621680 is an apocalyptic number.

40621680 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 40621680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77995008).

40621680 is an abundant number, since it is smaller than the sum of its proper divisors (115368336).

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

40621680 is a wasteful number, since it uses less digits than its factorization.

40621680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40621680 is about 6373.5139444423. The cubic root of 40621680 is about 343.7578519419.

The spelling of 40621680 in words is "forty million, six hundred twenty-one thousand, six hundred eighty".