140388432 has 40 divisors (see below), whose sum is σ = 363607680. Its totient is φ = 46675200.

The previous prime is 140388427. The next prime is 140388439. The reversal of 140388432 is 234883041.

It is a junction number, because it is equal to n+sod(n) for n = 140388393 and 140388402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140388439) 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, 16057 + ... + 23207.

It is an arithmetic number, because the mean of its divisors is an integer number (9090192).

Almost surely, 2^140388432 is an apocalyptic number.

140388432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140388432 is an abundant number, since it is smaller than the sum of its proper divisors (223219248).

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

140388432 is a wasteful number, since it uses less digits than its factorization.

140388432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571 (or 7565 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 140388432 is about 11848.5624444487. The cubic root of 140388432 is about 519.7291883766.

The spelling of 140388432 in words is "one hundred forty million, three hundred eighty-eight thousand, four hundred thirty-two".