35728781 has 12 divisors (see below), whose sum is σ = 41408160. Its totient is φ = 30567360.

The previous prime is 35728741. The next prime is 35728787. The reversal of 35728781 is 18782753.

It is not a de Polignac number, because 35728781 - 2¹⁸ = 35466637 is a prime.

It is a super-2 number, since 2×35728781² = 2553091583491922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35728787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2441 + ... + 8798.

It is an arithmetic number, because the mean of its divisors is an integer number (3450680).

Almost surely, 2^35728781 is an apocalyptic number.

It is an amenable number.

35728781 is a deficient number, since it is larger than the sum of its proper divisors (5679379).

35728781 is a wasteful number, since it uses less digits than its factorization.

35728781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11284 (or 11267 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 35728781 is about 5977.3556862546. The cubic root of 35728781 is about 329.3614250389.

The spelling of 35728781 in words is "thirty-five million, seven hundred twenty-eight thousand, seven hundred eighty-one".