281432490 has 16 divisors (see below), whose sum is σ = 675438048. Its totient is φ = 75048656.

The previous prime is 281432483. The next prime is 281432513. The reversal of 281432490 is 94234182.

281432490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4690512 + ... + 4690571.

It is an arithmetic number, because the mean of its divisors is an integer number (42214878).

Almost surely, 2^281432490 is an apocalyptic number.

281432490 is an abundant number, since it is smaller than the sum of its proper divisors (394005558).

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

281432490 is a wasteful number, since it uses less digits than its factorization.

281432490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381093.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 281432490 is about 16775.9497495671. The cubic root of 281432490 is about 655.3270243135.

The spelling of 281432490 in words is "two hundred eighty-one million, four hundred thirty-two thousand, four hundred ninety".