20492280 has 48 divisors (see below), whose sum is σ = 66601080. Its totient is φ = 5464512.

The previous prime is 20492273. The next prime is 20492321. The reversal of 20492280 is 8229402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28102 + ... + 28821.

Almost surely, 2^20492280 is an apocalyptic number.

20492280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20492280 is an abundant number, since it is smaller than the sum of its proper divisors (46108800).

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

20492280 is a wasteful number, since it uses less digits than its factorization.

20492280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56940 (or 56933 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20492280 is about 4526.8399574096. The cubic root of 20492280 is about 273.6508241481.

The spelling of 20492280 in words is "twenty million, four hundred ninety-two thousand, two hundred eighty".