40001376 has 48 divisors (see below), whose sum is σ = 105462000. Its totient is φ = 13275648.

The previous prime is 40001359. The next prime is 40001387. The reversal of 40001376 is 67310004.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×40001376² = 3200220163786752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25050 + ... + 26598.

It is an arithmetic number, because the mean of its divisors is an integer number (2197125).

Almost surely, 2^40001376 is an apocalyptic number.

It is an amenable number.

40001376 is an abundant number, since it is smaller than the sum of its proper divisors (65460624).

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

40001376 is a wasteful number, since it uses less digits than its factorization.

40001376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 40001376 is about 6324.6641017528. The cubic root of 40001376 is about 341.9991108352. Note that the first 3 decimals are identical.

The spelling of 40001376 in words is "forty million, one thousand, three hundred seventy-six".