40102064 has 40 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 18843968.

The previous prime is 40102033. The next prime is 40102109. The reversal of 40102064 is 46020104.

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, 20789 + ... + 22635.

It is an arithmetic number, because the mean of its divisors is an integer number (2062368).

Almost surely, 2^40102064 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 40102064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41247360).

40102064 is an abundant number, since it is smaller than the sum of its proper divisors (42392656).

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

40102064 is a wasteful number, since it uses less digits than its factorization.

40102064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40102064 is about 6332.6190474400. The cubic root of 40102064 is about 342.2858205921.

Adding to 40102064 its reverse (46020104), we get a palindrome (86122168).

The spelling of 40102064 in words is "forty million, one hundred two thousand, sixty-four".