81024435 has 32 divisors (see below), whose sum is σ = 145466880. Its totient is φ = 42786144.

The previous prime is 81024407. The next prime is 81024467. The reversal of 81024435 is 53442018.

It is not a de Polignac number, because 81024435 - 2⁶ = 81024371 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 81024399 and 81024408.

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, 10992 + ... + 16818.

It is an arithmetic number, because the mean of its divisors is an integer number (4545840).

Almost surely, 2^81024435 is an apocalyptic number.

81024435 is a deficient number, since it is larger than the sum of its proper divisors (64442445).

81024435 is a wasteful number, since it uses less digits than its factorization.

81024435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944 (or 5938 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 81024435 is about 9001.3573976373. The cubic root of 81024435 is about 432.7183745800.

The spelling of 81024435 in words is "eighty-one million, twenty-four thousand, four hundred thirty-five".