33087420 has 96 divisors (see below), whose sum is σ = 104509440. Its totient is φ = 8688960.

The previous prime is 33087419. The next prime is 33087433. The reversal of 33087420 is 2478033.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37909 + ... + 38771.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^33087420 is an apocalyptic number.

33087420 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 33087420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52254720).

33087420 is an abundant number, since it is smaller than the sum of its proper divisors (71422020).

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

33087420 is a wasteful number, since it uses less digits than its factorization.

33087420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 33087420 is about 5752.1665483538. The cubic root of 33087420 is about 321.0364182631.

The spelling of 33087420 in words is "thirty-three million, eighty-seven thousand, four hundred twenty".