40503736 has 128 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 14699520.

The previous prime is 40503733. The next prime is 40503769. The reversal of 40503736 is 63730504.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40503731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686475 + ... + 686533.

It is an arithmetic number, because the mean of its divisors is an integer number (793800).

Almost surely, 2^40503736 is an apocalyptic number.

40503736 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40503736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50803200).

40503736 is an abundant number, since it is smaller than the sum of its proper divisors (61102664).

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

40503736 is a wasteful number, since it uses less digits than its factorization.

40503736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 40503736 is about 6364.2545517916. The cubic root of 40503736 is about 343.4248320769.

The spelling of 40503736 in words is "forty million, five hundred three thousand, seven hundred thirty-six".