40288698 has 64 divisors (see below), whose sum is σ = 92534400. Its totient is φ = 12988800.

The previous prime is 40288673. The next prime is 40288723. The reversal of 40288698 is 89688204.

It is a happy number.

40288698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40288673) and next prime (40288723).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398848 + ... + 398948.

It is an arithmetic number, because the mean of its divisors is an integer number (1445850).

Almost surely, 2^40288698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40288698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46267200).

40288698 is an abundant number, since it is smaller than the sum of its proper divisors (52245702).

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

40288698 is a wasteful number, since it uses less digits than its factorization.

40288698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 40288698 is about 6347.3378671692. The cubic root of 40288698 is about 342.8159955084.

The spelling of 40288698 in words is "forty million, two hundred eighty-eight thousand, six hundred ninety-eight".