20249310 has 16 divisors (see below), whose sum is σ = 48598416. Its totient is φ = 5399808.

The previous prime is 20249291. The next prime is 20249311. The reversal of 20249310 is 1394202.

It is a super-2 number, since 2×20249310² = 820069110952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20249311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337459 + ... + 337518.

It is an arithmetic number, because the mean of its divisors is an integer number (3037401).

Almost surely, 2^20249310 is an apocalyptic number.

20249310 is an abundant number, since it is smaller than the sum of its proper divisors (28349106).

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

20249310 is a wasteful number, since it uses less digits than its factorization.

20249310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674987.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20249310 is about 4499.9233326802. The cubic root of 20249310 is about 272.5649930546.

The spelling of 20249310 in words is "twenty million, two hundred forty-nine thousand, three hundred ten".