81034370 has 8 divisors (see below), whose sum is σ = 145861884. Its totient is φ = 32413744.

The previous prime is 81034337. The next prime is 81034433. The reversal of 81034370 is 7343018.

It can be written as a sum of positive squares in 2 ways, for example, as 73942801 + 7091569 = 8599^2 + 2663^2 .

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

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, 4051709 + ... + 4051728.

Almost surely, 2^81034370 is an apocalyptic number.

81034370 is a deficient number, since it is larger than the sum of its proper divisors (64827514).

81034370 is a wasteful number, since it uses less digits than its factorization.

81034370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8103444.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 81034370 is about 9001.9092419331. The cubic root of 81034370 is about 432.7360601147.

Adding to 81034370 its reverse (7343018), we get a palindrome (88377388).

The spelling of 81034370 in words is "eighty-one million, thirty-four thousand, three hundred seventy".