40503506 has 16 divisors (see below), whose sum is σ = 64874304. Its totient is φ = 18919824.

The previous prime is 40503499. The next prime is 40503509. The reversal of 40503506 is 60530504.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (40503509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8261 + ... + 12216.

It is an arithmetic number, because the mean of its divisors is an integer number (4054644).

Almost surely, 2^40503506 is an apocalyptic number.

40503506 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40503506 is a deficient number, since it is larger than the sum of its proper divisors (24370798).

40503506 is a wasteful number, since it uses less digits than its factorization.

40503506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20545.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 40503506 is about 6364.2364820927. The cubic root of 40503506 is about 343.4241820310.

The spelling of 40503506 in words is "forty million, five hundred three thousand, five hundred six".