40146078 has 64 divisors (see below), whose sum is σ = 98910720. Its totient is φ = 10601472.

The previous prime is 40146077. The next prime is 40146089. The reversal of 40146078 is 87064104.

It is a super-2 number, since 2×40146078² = 3223415157564168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40146077) 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, 41650 + ... + 42602.

It is an arithmetic number, because the mean of its divisors is an integer number (1545480).

Almost surely, 2^40146078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40146078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49455360).

40146078 is an abundant number, since it is smaller than the sum of its proper divisors (58764642).

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

40146078 is a wasteful number, since it uses less digits than its factorization.

40146078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 40146078 is about 6336.0932758286. The cubic root of 40146078 is about 342.4110000160.

The spelling of 40146078 in words is "forty million, one hundred forty-six thousand, seventy-eight".