40661502 has 64 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 11191680.

The previous prime is 40661477. The next prime is 40661503. The reversal of 40661502 is 20516604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151024 + ... + 151292.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^40661502 is an apocalyptic number.

40661502 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40661502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48211200).

40661502 is an abundant number, since it is smaller than the sum of its proper divisors (55760898).

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

40661502 is a wasteful number, since it uses less digits than its factorization.

40661502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40661502 is about 6376.6372015350. The cubic root of 40661502 is about 343.8701454626.

The spelling of 40661502 in words is "forty million, six hundred sixty-one thousand, five hundred two".