40020374 has 4 divisors (see below), whose sum is σ = 60030564. Its totient is φ = 20010186.

The previous prime is 40020371. The next prime is 40020389. The reversal of 40020374 is 47302004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005092 + ... + 10005095.

It is an arithmetic number, because the mean of its divisors is an integer number (15007641).

Almost surely, 2^40020374 is an apocalyptic number.

40020374 is a deficient number, since it is larger than the sum of its proper divisors (20010190).

40020374 is a wasteful number, since it uses less digits than its factorization.

40020374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20010189.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 40020374 is about 6326.1658214119. The cubic root of 40020374 is about 342.0532445629.

Adding to 40020374 its reverse (47302004), we get a palindrome (87322378).

The spelling of 40020374 in words is "forty million, twenty thousand, three hundred seventy-four".