84257746 has 16 divisors (see below), whose sum is σ = 136670976. Its totient is φ = 38806336.

The previous prime is 84257743. The next prime is 84257749. The reversal of 84257746 is 64775248.

It is an interprime number because it is at equal distance from previous prime (84257743) and next prime (84257749).

It is a super-2 number, since 2×84257746² = 14198735522001032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84257741) 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 7 ways as a sum of consecutive naturals, for example, 24766 + ... + 27961.

It is an arithmetic number, because the mean of its divisors is an integer number (8541936).

Almost surely, 2^84257746 is an apocalyptic number.

84257746 is a deficient number, since it is larger than the sum of its proper divisors (52413230).

84257746 is a wasteful number, since it uses less digits than its factorization.

84257746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52793.

The product of its digits is 376320, while the sum is 43.

The square root of 84257746 is about 9179.2018171516. The cubic root of 84257746 is about 438.3993945294.

The spelling of 84257746 in words is "eighty-four million, two hundred fifty-seven thousand, seven hundred forty-six".