20774700 has 108 divisors (see below), whose sum is σ = 66823848. Its totient is φ = 5395200.

The previous prime is 20774683. The next prime is 20774707. The reversal of 20774700 is 747702.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20774707) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36619 + ... + 37181.

Almost surely, 2^20774700 is an apocalyptic number.

20774700 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 20774700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33411924).

20774700 is an abundant number, since it is smaller than the sum of its proper divisors (46049148).

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

20774700 is a wasteful number, since it uses less digits than its factorization.

20774700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20774700 is about 4557.9271604535. The cubic root of 20774700 is about 274.9022241933.

The spelling of 20774700 in words is "twenty million, seven hundred seventy-four thousand, seven hundred".