228794940 has 72 divisors (see below), whose sum is σ = 757109808. Its totient is φ = 55464960.

The previous prime is 228794933. The next prime is 228794963. The reversal of 228794940 is 49497822.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 55797 + ... + 59756.

It is an arithmetic number, because the mean of its divisors is an integer number (10515414).

Almost surely, 2^228794940 is an apocalyptic number.

228794940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228794940 is an abundant number, since it is smaller than the sum of its proper divisors (528314868).

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

228794940 is a wasteful number, since it uses less digits than its factorization.

228794940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115579 (or 115574 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 228794940 is about 15125.9690598652. The cubic root of 228794940 is about 611.6206478985.

The spelling of 228794940 in words is "two hundred twenty-eight million, seven hundred ninety-four thousand, nine hundred forty".