20914740 has 192 divisors, whose sum is σ = 81285120. Its totient is φ = 4337280.

The previous prime is 20914721. The next prime is 20914753. The reversal of 20914740 is 4741902.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41329 + ... + 41831.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^20914740 is an apocalyptic number.

20914740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20914740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40642560).

20914740 is an abundant number, since it is smaller than the sum of its proper divisors (60370380).

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

20914740 is a wasteful number, since it uses less digits than its factorization.

20914740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20914740 is about 4573.2636049106. The cubic root of 20914740 is about 275.5185367901.

The spelling of 20914740 in words is "twenty million, nine hundred fourteen thousand, seven hundred forty".