20573700 has 144 divisors (see below), whose sum is σ = 69412224. Its totient is φ = 4608000.

The previous prime is 20573687. The next prime is 20573711. The reversal of 20573700 is 737502.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203650 + ... + 203750.

Almost surely, 2^20573700 is an apocalyptic number.

20573700 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 20573700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34706112).

20573700 is an abundant number, since it is smaller than the sum of its proper divisors (48838524).

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

20573700 is a wasteful number, since it uses less digits than its factorization.

20573700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 20573700 is about 4535.8240706624. The cubic root of 20573700 is about 274.0127686876.

The spelling of 20573700 in words is "twenty million, five hundred seventy-three thousand, seven hundred".