401284615 has 16 divisors (see below), whose sum is σ = 502016256. Its totient is φ = 307584000.

The previous prime is 401284613. The next prime is 401284627. The reversal of 401284615 is 516482104.

It is not a de Polignac number, because 401284615 - 2¹ = 401284613 is a prime.

It is a super-2 number, since 2×401284615² = 322058684471396450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401284613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2839 + ... + 28471.

It is an arithmetic number, because the mean of its divisors is an integer number (31376016).

Almost surely, 2^401284615 is an apocalyptic number.

401284615 is a deficient number, since it is larger than the sum of its proper divisors (100731641).

401284615 is a wasteful number, since it uses less digits than its factorization.

401284615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25770.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 401284615 is about 20032.0896313889. The cubic root of 401284615 is about 737.5942172075.

The spelling of 401284615 in words is "four hundred one million, two hundred eighty-four thousand, six hundred fifteen".