40820148 has 18 divisors (see below), whose sum is σ = 103184354. Its totient is φ = 13606704.

The previous prime is 40820141. The next prime is 40820159. The reversal of 40820148 is 84102804.

It can be written as a sum of positive squares in only one way, i.e., 25280784 + 15539364 = 5028^2 + 3942^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40820141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566911 + ... + 566982.

Almost surely, 2^40820148 is an apocalyptic number.

It is an amenable number.

40820148 is an abundant number, since it is smaller than the sum of its proper divisors (62364206).

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

40820148 is a wasteful number, since it uses less digits than its factorization.

40820148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133903 (or 1133898 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 40820148 is about 6389.0647202857. The cubic root of 40820148 is about 344.3167827364.

The spelling of 40820148 in words is "forty million, eight hundred twenty thousand, one hundred forty-eight".