195454840 has 32 divisors (see below), whose sum is σ = 502598880. Its totient is φ = 67012992.

The previous prime is 195454837. The next prime is 195454859. The reversal of 195454840 is 48454591.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 195454793 and 195454802.

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, 348747 + ... + 349306.

It is an arithmetic number, because the mean of its divisors is an integer number (15706215).

Almost surely, 2^195454840 is an apocalyptic number.

195454840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195454840 is an abundant number, since it is smaller than the sum of its proper divisors (307144040).

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

195454840 is a wasteful number, since it uses less digits than its factorization.

195454840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698071 (or 698067 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 195454840 is about 13980.5164425353. The cubic root of 195454840 is about 580.3395158435.

The spelling of 195454840 in words is "one hundred ninety-five million, four hundred fifty-four thousand, eight hundred forty".