40001892 has 48 divisors (see below), whose sum is σ = 107006592. Its totient is φ = 11393280.

The previous prime is 40001861. The next prime is 40001893. The reversal of 40001892 is 29810004.

It is not an unprimeable number, because it can be changed into a prime (40001893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38208 + ... + 39240.

It is an arithmetic number, because the mean of its divisors is an integer number (2229304).

Almost surely, 2^40001892 is an apocalyptic number.

40001892 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40001892 is an abundant number, since it is smaller than the sum of its proper divisors (67004700).

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

40001892 is a wasteful number, since it uses less digits than its factorization.

40001892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 40001892 is about 6324.7048943014. The cubic root of 40001892 is about 342.0005813745. Note that the first 3 decimals are identical.

Adding to 40001892 its reverse (29810004), we get a palindrome (69811896).

The spelling of 40001892 in words is "forty million, one thousand, eight hundred ninety-two".