20753398 has 4 divisors (see below), whose sum is σ = 31130100. Its totient is φ = 10376698.

The previous prime is 20753393. The next prime is 20753401. The reversal of 20753398 is 89335702.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20753393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5188348 + ... + 5188351.

It is an arithmetic number, because the mean of its divisors is an integer number (7782525).

Almost surely, 2^20753398 is an apocalyptic number.

20753398 is a deficient number, since it is larger than the sum of its proper divisors (10376702).

20753398 is a wasteful number, since it uses less digits than its factorization.

20753398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376701.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 20753398 is about 4555.5897532592. The cubic root of 20753398 is about 274.8082321444.

The spelling of 20753398 in words is "twenty million, seven hundred fifty-three thousand, three hundred ninety-eight".