140634400 has 72 divisors (see below), whose sum is σ = 344977920. Its totient is φ = 55983360.

The previous prime is 140634391. The next prime is 140634401. The reversal of 140634400 is 4436041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (140634401) 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, 293361 + ... + 293839.

It is an arithmetic number, because the mean of its divisors is an integer number (4791360).

Almost surely, 2^140634400 is an apocalyptic number.

140634400 is a gapful number since it is divisible by the number (10) 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 140634400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172488960).

140634400 is an abundant number, since it is smaller than the sum of its proper divisors (204343520).

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

140634400 is a wasteful number, since it uses less digits than its factorization.

140634400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140634400 is about 11858.9375578085. The cubic root of 140634400 is about 520.0325423421.

The spelling of 140634400 in words is "one hundred forty million, six hundred thirty-four thousand, four hundred".