40091562 has 48 divisors (see below), whose sum is σ = 100975680. Its totient is φ = 11258496.

The previous prime is 40091561. The next prime is 40091581. The reversal of 40091562 is 26519004.

It is not an unprimeable number, because it can be changed into a prime (40091561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4738 + ... + 10130.

It is an arithmetic number, because the mean of its divisors is an integer number (2103660).

Almost surely, 2^40091562 is an apocalyptic number.

40091562 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 40091562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50487840).

40091562 is an abundant number, since it is smaller than the sum of its proper divisors (60884118).

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

40091562 is a wasteful number, since it uses less digits than its factorization.

40091562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467 (or 5464 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40091562 is about 6331.7897943630. The cubic root of 40091562 is about 342.2559385098.

Subtracting from 40091562 its sum of digits (27), we obtain a triangular number (40091535 = T₈₉₅₄).

The spelling of 40091562 in words is "forty million, ninety-one thousand, five hundred sixty-two".