140678730 has 24 divisors (see below), whose sum is σ = 365764932. Its totient is φ = 37514304.

The previous prime is 140678719. The next prime is 140678737. The reversal of 140678730 is 37876041.

It can be written as a sum of positive squares in 2 ways, for example, as 140635881 + 42849 = 11859^2 + 207^2 .

It is not an unprimeable number, because it can be changed into a prime (140678737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 781459 + ... + 781638.

Almost surely, 2^140678730 is an apocalyptic number.

140678730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140678730 is an abundant number, since it is smaller than the sum of its proper divisors (225086202).

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

140678730 is a wasteful number, since it uses less digits than its factorization.

140678730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563110 (or 1563107 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 140678730 is about 11860.8064649922. The cubic root of 140678730 is about 520.0871771987.

The spelling of 140678730 in words is "one hundred forty million, six hundred seventy-eight thousand, seven hundred thirty".