20393370 has 80 divisors (see below), whose sum is σ = 58100328. Its totient is φ = 5114880.

The previous prime is 20393363. The next prime is 20393383. The reversal of 20393370 is 7339302.

20393370 is a `hidden beast` number, since 203 + 93 + 370 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17969121 + 2424249 = 4239^2 + 1557^2 .

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 39 ways as a sum of consecutive naturals, for example, 13030 + ... + 14510.

Almost surely, 2^20393370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20393370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29050164).

20393370 is an abundant number, since it is smaller than the sum of its proper divisors (37706958).

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

20393370 is a wasteful number, since it uses less digits than its factorization.

20393370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 20393370 is about 4515.9019032747. The cubic root of 20393370 is about 273.2098374626.

The spelling of 20393370 in words is "twenty million, three hundred ninety-three thousand, three hundred seventy".