40021148 has 12 divisors (see below), whose sum is σ = 71358840. Its totient is φ = 19632912.

The previous prime is 40021147. The next prime is 40021151. The reversal of 40021148 is 84112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94178 + ... + 94601.

It is an arithmetic number, because the mean of its divisors is an integer number (5946570).

Almost surely, 2^40021148 is an apocalyptic number.

It is an amenable number.

40021148 is a deficient number, since it is larger than the sum of its proper divisors (31337692).

40021148 is a wasteful number, since it uses less digits than its factorization.

40021148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188836 (or 188834 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 40021148 is about 6326.2269956112. The cubic root of 40021148 is about 342.0554496689.

The spelling of 40021148 in words is "forty million, twenty-one thousand, one hundred forty-eight".