40978148 has 6 divisors (see below), whose sum is σ = 71711766. Its totient is φ = 20489072.

The previous prime is 40978141. The next prime is 40978151. The reversal of 40978148 is 84187904.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 32809984 + 8168164 = 5728^2 + 2858^2 .

It is a super-3 number, since 3×40978148³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (40978141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5122265 + ... + 5122272.

It is an arithmetic number, because the mean of its divisors is an integer number (11951961).

Almost surely, 2^40978148 is an apocalyptic number.

It is an amenable number.

40978148 is a deficient number, since it is larger than the sum of its proper divisors (30733618).

40978148 is a wasteful number, since it uses less digits than its factorization.

40978148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10244541 (or 10244539 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 40978148 is about 6401.4176554885. The cubic root of 40978148 is about 344.7604526287.

The spelling of 40978148 in words is "forty million, nine hundred seventy-eight thousand, one hundred forty-eight".