40258540 has 48 divisors (see below), whose sum is σ = 97070400. Its totient is φ = 13738752.

The previous prime is 40258531. The next prime is 40258571. The reversal of 40258540 is 4585204.

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

It is a junction number, because it is equal to n+sod(n) for n = 40258499 and 40258508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37126 + ... + 38194.

It is an arithmetic number, because the mean of its divisors is an integer number (2022300).

Almost surely, 2^40258540 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 40258540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48535200).

40258540 is an abundant number, since it is smaller than the sum of its proper divisors (56811860).

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

40258540 is a wasteful number, since it uses less digits than its factorization.

40258540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 40258540 is about 6344.9617808148. The cubic root of 40258540 is about 342.7304361495.

The spelling of 40258540 in words is "forty million, two hundred fifty-eight thousand, five hundred forty".