40251400 has 48 divisors (see below), whose sum is σ = 106957440. Its totient is φ = 13800000.

The previous prime is 40251377. The next prime is 40251401. The reversal of 40251400 is 415204.

It is not an unprimeable number, because it can be changed into a prime (40251401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12976 + ... + 15775.

It is an arithmetic number, because the mean of its divisors is an integer number (2228280).

Almost surely, 2^40251400 is an apocalyptic number.

40251400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40251400 is an abundant number, since it is smaller than the sum of its proper divisors (66706040).

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

40251400 is a wasteful number, since it uses less digits than its factorization.

40251400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28774 (or 28765 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40251400 is about 6344.3991047222. The cubic root of 40251400 is about 342.7101734508.

Adding to 40251400 its reverse (415204), we get a palindrome (40666604).

The spelling of 40251400 in words is "forty million, two hundred fifty-one thousand, four hundred".