40638502 has 4 divisors (see below), whose sum is σ = 60957756. Its totient is φ = 20319250.

The previous prime is 40638491. The next prime is 40638523. The reversal of 40638502 is 20583604.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10159624 + ... + 10159627.

It is an arithmetic number, because the mean of its divisors is an integer number (15239439).

Almost surely, 2^40638502 is an apocalyptic number.

40638502 is a deficient number, since it is larger than the sum of its proper divisors (20319254).

40638502 is a wasteful number, since it uses less digits than its factorization.

40638502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20319253.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40638502 is about 6374.8334880215. The cubic root of 40638502 is about 343.8052970216.

The spelling of 40638502 in words is "forty million, six hundred thirty-eight thousand, five hundred two".