284840157 has 16 divisors (see below), whose sum is σ = 434511872. Its totient is φ = 162589680.

The previous prime is 284840131. The next prime is 284840167. The reversal of 284840157 is 751048482.

It is a happy number.

It is not a de Polignac number, because 284840157 - 2⁶ = 284840093 is a prime.

It is a super-2 number, since 2×284840157² = 162267830079569298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284840167) 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, 13968 + ... + 27654.

It is an arithmetic number, because the mean of its divisors is an integer number (27156992).

Almost surely, 2^284840157 is an apocalyptic number.

It is an amenable number.

284840157 is a deficient number, since it is larger than the sum of its proper divisors (149671715).

284840157 is a wasteful number, since it uses less digits than its factorization.

284840157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14688.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 284840157 is about 16877.2082110757. The cubic root of 284840157 is about 657.9613840538.

The spelling of 284840157 in words is "two hundred eighty-four million, eight hundred forty thousand, one hundred fifty-seven".