161463420 has 36 divisors (see below), whose sum is σ = 489772920. Its totient is φ = 43056864.

The previous prime is 161463391. The next prime is 161463451. The reversal of 161463420 is 24364161.

161463420 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 634 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448330 + ... + 448689.

Almost surely, 2^161463420 is an apocalyptic number.

161463420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161463420 is an abundant number, since it is smaller than the sum of its proper divisors (328309500).

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

161463420 is a wasteful number, since it uses less digits than its factorization.

161463420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897034 (or 897029 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 161463420 is about 12706.8257247827. The cubic root of 161463420 is about 544.5336413935.

The spelling of 161463420 in words is "one hundred sixty-one million, four hundred sixty-three thousand, four hundred twenty".