34788390 has 64 divisors (see below), whose sum is σ = 102767616. Its totient is φ = 7339392.

The previous prime is 34788389. The next prime is 34788401. The reversal of 34788390 is 9388743.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 3642 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (1605744).

Almost surely, 2^34788390 is an apocalyptic number.

34788390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

34788390 is an abundant number, since it is smaller than the sum of its proper divisors (67979226).

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

34788390 is a wasteful number, since it uses less digits than its factorization.

34788390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12773.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 34788390 is about 5898.1683597537. The cubic root of 34788390 is about 326.4460690753.

The spelling of 34788390 in words is "thirty-four million, seven hundred eighty-eight thousand, three hundred ninety".