20073690 has 256 divisors, whose sum is σ = 70963200. Its totient is φ = 3919104.

The previous prime is 20073679. The next prime is 20073707. The reversal of 20073690 is 9637002.

It is a super-2 number, since 2×20073690² = 805906060432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 466809 + ... + 466851.

It is an arithmetic number, because the mean of its divisors is an integer number (277200).

Almost surely, 2^20073690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20073690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35481600).

20073690 is an abundant number, since it is smaller than the sum of its proper divisors (50889510).

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

20073690 is a wasteful number, since it uses less digits than its factorization.

20073690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20073690 is about 4480.3671724536. The cubic root of 20073690 is about 271.7747287782.

The spelling of 20073690 in words is "twenty million, seventy-three thousand, six hundred ninety".