70400019 has 16 divisors (see below), whose sum is σ = 95622912. Its totient is φ = 46063008.

The previous prime is 70400003. The next prime is 70400027. The reversal of 70400019 is 91000407.

It is not a de Polignac number, because 70400019 - 2⁴ = 70400003 is a prime.

It is a super-2 number, since 2×70400019² = 9912325350400722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70399968 and 70400004.

It is not an unprimeable number, because it can be changed into a prime (70400069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40737 + ... + 42429.

It is an arithmetic number, because the mean of its divisors is an integer number (5976432).

Almost surely, 2^70400019 is an apocalyptic number.

70400019 is a deficient number, since it is larger than the sum of its proper divisors (25222893).

70400019 is a wasteful number, since it uses less digits than its factorization.

70400019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 70400019 is about 8390.4719175980. The cubic root of 70400019 is about 412.9120833290.

The spelling of 70400019 in words is "seventy million, four hundred thousand, nineteen".