20146679740 has 48 divisors (see below), whose sum is σ = 46163859840. Its totient is φ = 7324534080.

The previous prime is 20146679699. The next prime is 20146679741. The reversal of 20146679740 is 4797664102.

It is a super-2 number, since 2×20146679740² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146679741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2063791 + ... + 2073529.

It is an arithmetic number, because the mean of its divisors is an integer number (961747080).

Almost surely, 2^20146679740 is an apocalyptic number.

20146679740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20146679740 is an abundant number, since it is smaller than the sum of its proper divisors (26017180100).

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

20146679740 is a wasteful number, since it uses less digits than its factorization.

20146679740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19162 (or 19160 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 20146679740 in words is "twenty billion, one hundred forty-six million, six hundred seventy-nine thousand, seven hundred forty".