229691940 has 48 divisors (see below), whose sum is σ = 647787840. Its totient is φ = 60808320.

The previous prime is 229691933. The next prime is 229691971. The reversal of 229691940 is 49196922.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 229691892 and 229691901.

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, 5431 + ... + 22110.

It is an arithmetic number, because the mean of its divisors is an integer number (13495580).

Almost surely, 2^229691940 is an apocalyptic number.

229691940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229691940 is an abundant number, since it is smaller than the sum of its proper divisors (418095900).

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

229691940 is a wasteful number, since it uses less digits than its factorization.

229691940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27692 (or 27690 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 229691940 is about 15155.5910475309. The cubic root of 229691940 is about 612.4189002715.

The spelling of 229691940 in words is "two hundred twenty-nine million, six hundred ninety-one thousand, nine hundred forty".