40250320 has 80 divisors (see below), whose sum is σ = 104136192. Its totient is φ = 14343680.

The previous prime is 40250311. The next prime is 40250323. The reversal of 40250320 is 2305204.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 40250294 and 40250303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40250323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46209 + ... + 47071.

Almost surely, 2^40250320 is an apocalyptic number.

40250320 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 40250320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52068096).

40250320 is an abundant number, since it is smaller than the sum of its proper divisors (63885872).

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

40250320 is a wasteful number, since it uses less digits than its factorization.

40250320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40250320 is about 6344.3139897076. The cubic root of 40250320 is about 342.7071082961.

Adding to 40250320 its reverse (2305204), we get a palindrome (42555524).

Subtracting from 40250320 its reverse (2305204), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 40250320 in words is "forty million, two hundred fifty thousand, three hundred twenty".