140622640 has 40 divisors (see below), whose sum is σ = 346183200. Its totient is φ = 52939776.

The previous prime is 140622619. The next prime is 140622659. The reversal of 140622640 is 46226041.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50340 + ... + 53059.

It is an arithmetic number, because the mean of its divisors is an integer number (8654580).

Almost surely, 2^140622640 is an apocalyptic number.

140622640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140622640 is an abundant number, since it is smaller than the sum of its proper divisors (205560560).

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

140622640 is a wasteful number, since it uses less digits than its factorization.

140622640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103429 (or 103423 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 140622640 is about 11858.4417188769. The cubic root of 140622640 is about 520.0180467110.

Adding to 140622640 its reverse (46226041), we get a palindrome (186848681).

The spelling of 140622640 in words is "one hundred forty million, six hundred twenty-two thousand, six hundred forty".