20838415730 has 32 divisors (see below), whose sum is σ = 40931654400. Its totient is φ = 7575275520.

The previous prime is 20838415721. The next prime is 20838415747. The reversal of 20838415730 is 3751483802.

It is a super-2 number, since 2×20838415730² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352871 + ... + 407669.

It is an arithmetic number, because the mean of its divisors is an integer number (1279114200).

Almost surely, 2^20838415730 is an apocalyptic number.

20838415730 is a deficient number, since it is larger than the sum of its proper divisors (20093238670).

20838415730 is a wasteful number, since it uses less digits than its factorization.

20838415730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58274.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20838415730 in words is "twenty billion, eight hundred thirty-eight million, four hundred fifteen thousand, seven hundred thirty".