20029480 has 32 divisors (see below), whose sum is σ = 45246600. Its totient is φ = 7979776.

The previous prime is 20029453. The next prime is 20029489. The reversal of 20029480 is 8492002.

It can be written as a sum of positive squares in 4 ways, for example, as 17589636 + 2439844 = 4194^2 + 1562^2 .

It is not an unprimeable number, because it can be changed into a prime (20029489) 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, 10866 + ... + 12574.

Almost surely, 2^20029480 is an apocalyptic number.

20029480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20029480 is an abundant number, since it is smaller than the sum of its proper divisors (25217120).

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

20029480 is a wasteful number, since it uses less digits than its factorization.

20029480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20029480 is about 4475.4307055299. The cubic root of 20029480 is about 271.5750645703.

The spelling of 20029480 in words is "twenty million, twenty-nine thousand, four hundred eighty".