94284021 has 16 divisors (see below), whose sum is σ = 138265344. Its totient is φ = 56785344.

The previous prime is 94284007. The next prime is 94284041. The reversal of 94284021 is 12048249.

94284021 = 46² + 47² + ... + 656².

It is not a de Polignac number, because 94284021 - 2⁶ = 94283957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94284021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94284041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23886 + ... + 27551.

It is an arithmetic number, because the mean of its divisors is an integer number (8641584).

Almost surely, 2^94284021 is an apocalyptic number.

It is an amenable number.

94284021 is a deficient number, since it is larger than the sum of its proper divisors (43981323).

94284021 is a wasteful number, since it uses less digits than its factorization.

94284021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51500.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 94284021 is about 9709.9959320280. The cubic root of 94284021 is about 455.1410760864.

The spelling of 94284021 in words is "ninety-four million, two hundred eighty-four thousand, twenty-one".