40621536 has 72 divisors (see below), whose sum is σ = 118014624. Its totient is φ = 13248000.

The previous prime is 40621463. The next prime is 40621549. The reversal of 40621536 is 63512604.

40621536 is a `hidden beast` number, since 4 + 0 + 621 + 5 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12036 + ... + 15036.

It is an arithmetic number, because the mean of its divisors is an integer number (1639092).

Almost surely, 2^40621536 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 40621536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59007312).

40621536 is an abundant number, since it is smaller than the sum of its proper divisors (77393088).

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

40621536 is a wasteful number, since it uses less digits than its factorization.

40621536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064 (or 3053 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40621536 is about 6373.5026476813. The cubic root of 40621536 is about 343.7574457451.

The spelling of 40621536 in words is "forty million, six hundred twenty-one thousand, five hundred thirty-six".