400140348 has 48 divisors (see below), whose sum is σ = 973279104. Its totient is φ = 127828800.

The previous prime is 400140341. The next prime is 400140353. The reversal of 400140348 is 843041004.

It is a super-2 number, since 2×400140348² = 320224596195122208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400140341) 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, 23023 + ... + 36473.

It is an arithmetic number, because the mean of its divisors is an integer number (20276648).

Almost surely, 2^400140348 is an apocalyptic number.

It is an amenable number.

400140348 is an abundant number, since it is smaller than the sum of its proper divisors (573138756).

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

400140348 is a wasteful number, since it uses less digits than its factorization.

400140348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13562 (or 13560 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 400140348 is about 20003.5083922796. The cubic root of 400140348 is about 736.8924640602.

The spelling of 400140348 in words is "four hundred million, one hundred forty thousand, three hundred forty-eight".