32420916 has 144 divisors (see below), whose sum is σ = 97843200. Its totient is φ = 8942400.

The previous prime is 32420909. The next prime is 32420933. The reversal of 32420916 is 61902423.

It is a super-2 number, since 2×32420916² = 2102231588558112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32420916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233175 + ... + 233313.

Almost surely, 2^32420916 is an apocalyptic number.

32420916 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32420916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48921600).

32420916 is an abundant number, since it is smaller than the sum of its proper divisors (65422284).

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

32420916 is a wasteful number, since it uses less digits than its factorization.

32420916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 32420916 is about 5693.9367752022. The cubic root of 32420916 is about 318.8661565126.

The spelling of 32420916 in words is "thirty-two million, four hundred twenty thousand, nine hundred sixteen".