228734040 has 32 divisors (see below), whose sum is σ = 686202480. Its totient is φ = 60995712.

The previous prime is 228733979. The next prime is 228734059. The reversal of 228734040 is 40437822.

It is a super-2 number, since 2×228734040² = 104638522109443200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 228733989 and 228734007.

It is a congruent number.

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, 952939 + ... + 953178.

Almost surely, 2^228734040 is an apocalyptic number.

228734040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228734040 is an abundant number, since it is smaller than the sum of its proper divisors (457468440).

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

228734040 is a wasteful number, since it uses less digits than its factorization.

228734040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906131 (or 1906127 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 228734040 is about 15123.9558317260. The cubic root of 228734040 is about 611.5663765893.

The spelling of 228734040 in words is "two hundred twenty-eight million, seven hundred thirty-four thousand, forty".