71254378 has 32 divisors (see below), whose sum is σ = 125196624. Its totient is φ = 30108672.

The previous prime is 71254373. The next prime is 71254387. The reversal of 71254378 is 87345217.

It can be written as a sum of positive squares in 8 ways, for example, as 67617729 + 3636649 = 8223^2 + 1907^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (71254373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14176 + ... + 18532.

Almost surely, 2^71254378 is an apocalyptic number.

71254378 is a deficient number, since it is larger than the sum of its proper divisors (53942246).

71254378 is a wasteful number, since it uses less digits than its factorization.

71254378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426.

The product of its digits is 47040, while the sum is 37.

The square root of 71254378 is about 8441.2308344222. The cubic root of 71254378 is about 414.5757080310.

The spelling of 71254378 in words is "seventy-one million, two hundred fifty-four thousand, three hundred seventy-eight".