20359380 has 24 divisors (see below), whose sum is σ = 57006432. Its totient is φ = 5429152.

The previous prime is 20359337. The next prime is 20359441. The reversal of 20359380 is 8395302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169602 + ... + 169721.

It is an arithmetic number, because the mean of its divisors is an integer number (2375268).

Almost surely, 2^20359380 is an apocalyptic number.

20359380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20359380 is an abundant number, since it is smaller than the sum of its proper divisors (36647052).

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

20359380 is a wasteful number, since it uses less digits than its factorization.

20359380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339335 (or 339333 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20359380 is about 4512.1369660062. The cubic root of 20359380 is about 273.0579651232.

The spelling of 20359380 in words is "twenty million, three hundred fifty-nine thousand, three hundred eighty".