140690304 has 64 divisors (see below), whose sum is σ = 415242000. Its totient is φ = 46895616.

The previous prime is 140690299. The next prime is 140690309. The reversal of 140690304 is 403096041.

It is an interprime number because it is at equal distance from previous prime (140690299) and next prime (140690309).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×140690304² = 39587523279224832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140690309) 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, 16899 + ... + 23810.

Almost surely, 2^140690304 is an apocalyptic number.

It is an amenable number.

140690304 is an abundant number, since it is smaller than the sum of its proper divisors (274551696).

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

140690304 is an equidigital number, since it uses as much as digits as its factorization.

140690304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40732 (or 40714 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 140690304 is about 11861.2943644444. The cubic root of 140690304 is about 520.1014397763.

The spelling of 140690304 in words is "one hundred forty million, six hundred ninety thousand, three hundred four".