19877045 has 8 divisors (see below), whose sum is σ = 24622080. Its totient is φ = 15388560.

The previous prime is 19877027. The next prime is 19877057. The reversal of 19877045 is 54077891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19877045 - 2¹⁸ = 19614901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19876993 and 19877011.

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, 63965 + ... + 64274.

It is an arithmetic number, because the mean of its divisors is an integer number (3077760).

Almost surely, 2^19877045 is an apocalyptic number.

It is an amenable number.

19877045 is a deficient number, since it is larger than the sum of its proper divisors (4745035).

19877045 is a wasteful number, since it uses less digits than its factorization.

19877045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128275.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 19877045 is about 4458.3679749433. The cubic root of 19877045 is about 270.8843658207.

The spelling of 19877045 in words is "nineteen million, eight hundred seventy-seven thousand, forty-five".