20988462 has 16 divisors (see below), whose sum is σ = 45793152. Its totient is φ = 6360120.

The previous prime is 20988437. The next prime is 20988467. The reversal of 20988462 is 26488902.

It is a self number, because there is not a number n which added to its sum of digits gives 20988462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20988467) 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, 158938 + ... + 159069.

It is an arithmetic number, because the mean of its divisors is an integer number (2862072).

Almost surely, 2^20988462 is an apocalyptic number.

20988462 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20988462 is an abundant number, since it is smaller than the sum of its proper divisors (24804690).

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

20988462 is a wasteful number, since it uses less digits than its factorization.

20988462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318023.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 20988462 is about 4581.3166229808. The cubic root of 20988462 is about 275.8418806559.

The spelling of 20988462 in words is "twenty million, nine hundred eighty-eight thousand, four hundred sixty-two".