34628781 has 32 divisors (see below), whose sum is σ = 52531200. Its totient is φ = 20105280.

The previous prime is 34628761. The next prime is 34628807. The reversal of 34628781 is 18782643.

It is not a de Polignac number, because 34628781 - 2¹⁵ = 34596013 is a prime.

It is a super-2 number, since 2×34628781² = 2398304947091922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34628701) 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, 96280 + ... + 96638.

It is an arithmetic number, because the mean of its divisors is an integer number (1641600).

Almost surely, 2^34628781 is an apocalyptic number.

It is an amenable number.

34628781 is a deficient number, since it is larger than the sum of its proper divisors (17902419).

34628781 is a wasteful number, since it uses less digits than its factorization.

34628781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its digits is 64512, while the sum is 39.

The square root of 34628781 is about 5884.6224177937. The cubic root of 34628781 is about 325.9460591747.

The spelling of 34628781 in words is "thirty-four million, six hundred twenty-eight thousand, seven hundred eighty-one".