40293972 has 36 divisors (see below), whose sum is σ = 102051040. Its totient is φ = 13405392.

The previous prime is 40293971. The next prime is 40294013. The reversal of 40293972 is 27939204.

40293972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40293971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30273 + ... + 31575.

Almost surely, 2^40293972 is an apocalyptic number.

It is an amenable number.

40293972 is an abundant number, since it is smaller than the sum of its proper divisors (61757068).

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

40293972 is a wasteful number, since it uses less digits than its factorization.

40293972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40293972 is about 6347.7533033350. The cubic root of 40293972 is about 342.8309536543.

It can be divided in two parts, 4029 and 3972, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 40293972 in words is "forty million, two hundred ninety-three thousand, nine hundred seventy-two".