32661420 has 192 divisors, whose sum is σ = 109734912. Its totient is φ = 7168000.

The previous prime is 32661401. The next prime is 32661427. The reversal of 32661420 is 2416623.

It is not an unprimeable number, because it can be changed into a prime (32661427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 459985 + ... + 460055.

It is an arithmetic number, because the mean of its divisors is an integer number (571536).

Almost surely, 2^32661420 is an apocalyptic number.

32661420 is a gapful number since it is divisible by the number (30) 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 32661420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54867456).

32661420 is an abundant number, since it is smaller than the sum of its proper divisors (77073492).

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

32661420 is a wasteful number, since it uses less digits than its factorization.

32661420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 32661420 is about 5715.0170603420. The cubic root of 32661420 is about 319.6526830664.

The spelling of 32661420 in words is "thirty-two million, six hundred sixty-one thousand, four hundred twenty".