40736520 has 224 divisors, whose sum is σ = 151096320. Its totient is φ = 9797760.

The previous prime is 40736497. The next prime is 40736537. The reversal of 40736520 is 2563704.

It is a happy number.

40736520 is a `hidden beast` number, since 4 + 0 + 7 + 3 + 652 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 320697 + ... + 320823.

Almost surely, 2^40736520 is an apocalyptic number.

40736520 is a gapful number since it is divisible by the number (40) 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 40736520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75548160).

40736520 is an abundant number, since it is smaller than the sum of its proper divisors (110359800).

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

40736520 is a wasteful number, since it uses less digits than its factorization.

40736520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 40736520 is about 6382.5167449839. The cubic root of 40736520 is about 344.0814887173.

The spelling of 40736520 in words is "forty million, seven hundred thirty-six thousand, five hundred twenty".