40325040 has 300 divisors, whose sum is σ = 164203776. Its totient is φ = 9144576.

The previous prime is 40325029. The next prime is 40325063. The reversal of 40325040 is 4052304.

It is a happy number.

It is a super-2 number, since 2×40325040² = 3252217702003200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 317457 + ... + 317583.

Almost surely, 2^40325040 is an apocalyptic number.

40325040 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 40325040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82101888).

40325040 is an abundant number, since it is smaller than the sum of its proper divisors (123878736).

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

40325040 is a wasteful number, since it uses less digits than its factorization.

40325040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40325040 is about 6350.1999968505. The cubic root of 40325040 is about 342.9190423954.

Adding to 40325040 its reverse (4052304), we get a palindrome (44377344).

The spelling of 40325040 in words is "forty million, three hundred twenty-five thousand, forty".