33972154 has 8 divisors (see below), whose sum is σ = 53955828. Its totient is φ = 15986880.

The previous prime is 33972143. The next prime is 33972161. The reversal of 33972154 is 45127933.

It can be written as a sum of positive squares in 2 ways, for example, as 33953929 + 18225 = 5827^2 + 135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 999181 = 33972154 / (3 + 3 + 9 + 7 + 2 + 1 + 5 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499557 + ... + 499624.

Almost surely, 2^33972154 is an apocalyptic number.

33972154 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

33972154 is a deficient number, since it is larger than the sum of its proper divisors (19983674).

33972154 is a wasteful number, since it uses less digits than its factorization.

33972154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999200.

The product of its digits is 22680, while the sum is 34.

The square root of 33972154 is about 5828.5636309472. The cubic root of 33972154 is about 323.8727145701.

The spelling of 33972154 in words is "thirty-three million, nine hundred seventy-two thousand, one hundred fifty-four".