291048402 has 16 divisors (see below), whose sum is σ = 590785632. Its totient is φ = 95568000.

The previous prime is 291048397. The next prime is 291048409. The reversal of 291048402 is 204840192.

291048402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 291048402.

It is not an unprimeable number, because it can be changed into a prime (291048409) 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, 361599 + ... + 362402.

It is an arithmetic number, because the mean of its divisors is an integer number (36924102).

Almost surely, 2^291048402 is an apocalyptic number.

291048402 is an abundant number, since it is smaller than the sum of its proper divisors (299737230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291048402 is a wasteful number, since it uses less digits than its factorization.

291048402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724073.

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

The square root of 291048402 is about 17060.1407379892. The cubic root of 291048402 is about 662.7072773516.

Adding to 291048402 its reverse (204840192), we get a palindrome (495888594).

The spelling of 291048402 in words is "two hundred ninety-one million, forty-eight thousand, four hundred two".