20690120088 has 192 divisors, whose sum is σ = 63665078400. Its totient is φ = 6220843200.

The previous prime is 20690120081. The next prime is 20690120107. The reversal of 20690120088 is 88002109602.

It is a super-2 number, since 2×20690120088² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20690120081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3420795 + ... + 3426837.

It is an arithmetic number, because the mean of its divisors is an integer number (331588950).

Almost surely, 2^20690120088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20690120088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31832539200).

20690120088 is an abundant number, since it is smaller than the sum of its proper divisors (42974958312).

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

20690120088 is a wasteful number, since it uses less digits than its factorization.

20690120088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211 (or 6190 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 20690120088 in words is "twenty billion, six hundred ninety million, one hundred twenty thousand, eighty-eight".