40778748 has 24 divisors (see below), whose sum is σ = 105722960. Its totient is φ = 13592880.

The previous prime is 40778729. The next prime is 40778761. The reversal of 40778748 is 84787704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188683 + ... + 188898.

Almost surely, 2^40778748 is an apocalyptic number.

It is an amenable number.

40778748 is an abundant number, since it is smaller than the sum of its proper divisors (64944212).

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

40778748 is a wasteful number, since it uses less digits than its factorization.

40778748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377594 (or 377586 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 40778748 is about 6385.8239875524. The cubic root of 40778748 is about 344.2003407562.

The spelling of 40778748 in words is "forty million, seven hundred seventy-eight thousand, seven hundred forty-eight".