19472705 has 16 divisors (see below), whose sum is σ = 26817024. Its totient is φ = 13296960.

The previous prime is 19472647. The next prime is 19472729. The reversal of 19472705 is 50727491.

It is not a de Polignac number, because 19472705 - 2¹² = 19468609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

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, 8459 + ... + 10511.

It is an arithmetic number, because the mean of its divisors is an integer number (1676064).

Almost surely, 2^19472705 is an apocalyptic number.

It is an amenable number.

19472705 is a deficient number, since it is larger than the sum of its proper divisors (7344319).

19472705 is a wasteful number, since it uses less digits than its factorization.

19472705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 19472705 is about 4412.7888007472. The cubic root of 19472705 is about 269.0349866739.

It can be divided in two parts, 1947 and 2705, that multiplied together give a triangular number (5266635 = T₃₂₄₅).

The spelling of 19472705 in words is "nineteen million, four hundred seventy-two thousand, seven hundred five".