20298692140 has 12 divisors (see below), whose sum is σ = 42627253536. Its totient is φ = 8119476848.

The previous prime is 20298692131. The next prime is 20298692153. The reversal of 20298692140 is 4129689202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507467284 + ... + 507467323.

It is an arithmetic number, because the mean of its divisors is an integer number (3552271128).

Almost surely, 2^20298692140 is an apocalyptic number.

20298692140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20298692140 is an abundant number, since it is smaller than the sum of its proper divisors (22328561396).

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

20298692140 is a wasteful number, since it uses less digits than its factorization.

20298692140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014934616 (or 1014934614 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 20298692140 in words is "twenty billion, two hundred ninety-eight million, six hundred ninety-two thousand, one hundred forty".