28790346 has 32 divisors (see below), whose sum is σ = 62431488. Its totient is φ = 8798400.

The previous prime is 28790303. The next prime is 28790371. The reversal of 28790346 is 64309782.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11071 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (1950984).

Almost surely, 2^28790346 is an apocalyptic number.

28790346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28790346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31215744).

28790346 is an abundant number, since it is smaller than the sum of its proper divisors (33641142).

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

28790346 is a wasteful number, since it uses less digits than its factorization.

28790346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 28790346 is about 5365.6636122664. The cubic root of 28790346 is about 306.4895193554.

The spelling of 28790346 in words is "twenty-eight million, seven hundred ninety thousand, three hundred forty-six".