34978723 has 4 divisors (see below), whose sum is σ = 37669408. Its totient is φ = 32288040.

The previous prime is 34978711. The next prime is 34978739. The reversal of 34978723 is 32787943.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34978723 - 2¹³ = 34970531 is a prime.

It is a super-2 number, since 2×34978723² = 2447022125421458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34978723.

It is not an unprimeable number, because it can be changed into a prime (34978123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345323 + ... + 1345348.

It is an arithmetic number, because the mean of its divisors is an integer number (9417352).

Almost surely, 2^34978723 is an apocalyptic number.

34978723 is a deficient number, since it is larger than the sum of its proper divisors (2690685).

34978723 is a wasteful number, since it uses less digits than its factorization.

34978723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690684.

The product of its digits is 254016, while the sum is 43.

The square root of 34978723 is about 5914.2812750156. The cubic root of 34978723 is about 327.0403333180.

The spelling of 34978723 in words is "thirty-four million, nine hundred seventy-eight thousand, seven hundred twenty-three".