40263888 has 240 divisors, whose sum is σ = 137401920. Its totient is φ = 10063872.

The previous prime is 40263877. The next prime is 40263893. The reversal of 40263888 is 88836204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 759670 + ... + 759722.

It is an arithmetic number, because the mean of its divisors is an integer number (572508).

Almost surely, 2^40263888 is an apocalyptic number.

40263888 is a gapful number since it is divisible by the number (48) 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 40263888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68700960).

40263888 is an abundant number, since it is smaller than the sum of its proper divisors (97138032).

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

40263888 is a wasteful number, since it uses less digits than its factorization.

40263888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 40263888 is about 6345.3832035583. The cubic root of 40263888 is about 342.7456117388.

The spelling of 40263888 in words is "forty million, two hundred sixty-three thousand, eight hundred eighty-eight".