290102428 has 48 divisors (see below), whose sum is σ = 654796800. Its totient is φ = 109126080.

The previous prime is 290102389. The next prime is 290102437. The reversal of 290102428 is 824201092.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 290102396 and 290102405.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7308 + ... + 25171.

It is an arithmetic number, because the mean of its divisors is an integer number (13641600).

Almost surely, 2^290102428 is an apocalyptic number.

290102428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

290102428 is an abundant number, since it is smaller than the sum of its proper divisors (364694372).

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

290102428 is a wasteful number, since it uses less digits than its factorization.

290102428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32530 (or 32528 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 290102428 is about 17032.3934900530. The cubic root of 290102428 is about 661.9885145703.

The spelling of 290102428 in words is "two hundred ninety million, one hundred two thousand, four hundred twenty-eight".