40071672 has 56 divisors (see below), whose sum is σ = 112666440. Its totient is φ = 13355280.

The previous prime is 40071641. The next prime is 40071701. The reversal of 40071672 is 27617004.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2397 + ... + 9267.

Almost surely, 2^40071672 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 40071672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56333220).

40071672 is an abundant number, since it is smaller than the sum of its proper divisors (72594768).

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

40071672 is an equidigital number, since it uses as much as digits as its factorization.

40071672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6895 (or 6876 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 40071672 is about 6330.2189535592. The cubic root of 40071672 is about 342.1993297843.

Adding to 40071672 its reverse (27617004), we get a palindrome (67688676).

The spelling of 40071672 in words is "forty million, seventy-one thousand, six hundred seventy-two".