81035370 has 64 divisors (see below), whose sum is σ = 232727040. Its totient is φ = 19946304.

The previous prime is 81035299. The next prime is 81035377. The reversal of 81035370 is 7353018.

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

It is not an unprimeable number, because it can be changed into a prime (81035377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8034 + ... + 15053.

It is an arithmetic number, because the mean of its divisors is an integer number (3636360).

Almost surely, 2^81035370 is an apocalyptic number.

81035370 is an abundant number, since it is smaller than the sum of its proper divisors (151691670).

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

81035370 is a wasteful number, since it uses less digits than its factorization.

81035370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23116 (or 23110 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 81035370 is about 9001.9647855343. The cubic root of 81035370 is about 432.7378401589.

Adding to 81035370 its reverse (7353018), we get a palindrome (88388388).

The spelling of 81035370 in words is "eighty-one million, thirty-five thousand, three hundred seventy".