33973890 has 16 divisors (see below), whose sum is σ = 81537408. Its totient is φ = 9059696.

The previous prime is 33973879. The next prime is 33973931. The reversal of 33973890 is 9837933.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566202 + ... + 566261.

It is an arithmetic number, because the mean of its divisors is an integer number (5096088).

Almost surely, 2^33973890 is an apocalyptic number.

33973890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33973890 is an abundant number, since it is smaller than the sum of its proper divisors (47563518).

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

33973890 is a wasteful number, since it uses less digits than its factorization.

33973890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132473.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 33973890 is about 5828.7125508126. The cubic root of 33973890 is about 323.8782311809.

The spelling of 33973890 in words is "thirty-three million, nine hundred seventy-three thousand, eight hundred ninety".