40971372 has 96 divisors (see below), whose sum is σ = 113272320. Its totient is φ = 11404800.

The previous prime is 40971361. The next prime is 40971383. The reversal of 40971372 is 27317904.

It is an interprime number because it is at equal distance from previous prime (40971361) and next prime (40971383).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67872 + ... + 68472.

It is an arithmetic number, because the mean of its divisors is an integer number (1179920).

Almost surely, 2^40971372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40971372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56636160).

40971372 is an abundant number, since it is smaller than the sum of its proper divisors (72300948).

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

40971372 is a wasteful number, since it uses less digits than its factorization.

40971372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 40971372 is about 6400.8883758428. Note that the first 3 decimals coincide. The cubic root of 40971372 is about 344.7414487961.

The spelling of 40971372 in words is "forty million, nine hundred seventy-one thousand, three hundred seventy-two".