40451430 has 16 divisors (see below), whose sum is σ = 97083504. Its totient is φ = 10787040.

The previous prime is 40451423. The next prime is 40451431. The reversal of 40451430 is 3415404.

It is a junction number, because it is equal to n+sod(n) for n = 40451397 and 40451406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674161 + ... + 674220.

It is an arithmetic number, because the mean of its divisors is an integer number (6067719).

Almost surely, 2^40451430 is an apocalyptic number.

40451430 is an abundant number, since it is smaller than the sum of its proper divisors (56632074).

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

40451430 is a wasteful number, since it uses less digits than its factorization.

40451430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348391.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40451430 is about 6360.1438662974. The cubic root of 40451430 is about 343.2769369355.

Adding to 40451430 its reverse (3415404), we get a palindrome (43866834).

The spelling of 40451430 in words is "forty million, four hundred fifty-one thousand, four hundred thirty".