40887420 has 96 divisors (see below), whose sum is σ = 132883968. Its totient is φ = 9199872.

The previous prime is 40887389. The next prime is 40887421. The reversal of 40887420 is 2478804.

It is a super-2 number, since 2×40887420² = 3343562228512800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40887421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27414 + ... + 28866.

It is an arithmetic number, because the mean of its divisors is an integer number (1384208).

Almost surely, 2^40887420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40887420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66441984).

40887420 is an abundant number, since it is smaller than the sum of its proper divisors (91996548).

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

40887420 is a wasteful number, since it uses less digits than its factorization.

40887420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 40887420 is about 6394.3271733623. The cubic root of 40887420 is about 344.5058247263.

The spelling of 40887420 in words is "forty million, eight hundred eighty-seven thousand, four hundred twenty".