40778598 has 64 divisors (see below), whose sum is σ = 99095040. Its totient is φ = 10927872.

The previous prime is 40778587. The next prime is 40778623. The reversal of 40778598 is 89587704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109140 + ... + 109512.

It is an arithmetic number, because the mean of its divisors is an integer number (1548360).

Almost surely, 2^40778598 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40778598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49547520).

40778598 is an abundant number, since it is smaller than the sum of its proper divisors (58316442).

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

40778598 is a wasteful number, since it uses less digits than its factorization.

40778598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 40778598 is about 6385.8122427770. The cubic root of 40778598 is about 344.1999187217.

The spelling of 40778598 in words is "forty million, seven hundred seventy-eight thousand, five hundred ninety-eight".